diff --git a/devel-common/src/tests_common/test_utils/mock_security_manager.py b/devel-common/src/tests_common/test_utils/mock_security_manager.py
deleted file mode 100644
index ee0f49372afa9..0000000000000
--- a/devel-common/src/tests_common/test_utils/mock_security_manager.py
+++ /dev/null
@@ -1,30 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-from __future__ import annotations
-
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0", __file__):
-    from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
-
-
-class MockSecurityManager(FabAirflowSecurityManagerOverride):
-    """Mock Security Manager for testing purposes."""
-
-    VIEWER_VMS = {
-        "Airflow",
-    }
diff --git a/providers/common/io/tests/unit/common/io/operators/test_file_transfer.py b/providers/common/io/tests/unit/common/io/operators/test_file_transfer.py
index 65751bb3ef7da..7168fa1932665 100644
--- a/providers/common/io/tests/unit/common/io/operators/test_file_transfer.py
+++ b/providers/common/io/tests/unit/common/io/operators/test_file_transfer.py
@@ -20,11 +20,7 @@
 from unittest import mock
 
 from airflow.providers.common.compat.openlineage.facet import Dataset
-
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.8.0", __file__):
-    from airflow.providers.common.io.operators.file_transfer import FileTransferOperator
+from airflow.providers.common.io.operators.file_transfer import FileTransferOperator
 
 
 def test_file_transfer_copy():
diff --git a/providers/fab/docs/cli-ref.rst b/providers/fab/docs/cli-ref.rst
index bd980f8a1ee00..e5e42b8425b0b 100644
--- a/providers/fab/docs/cli-ref.rst
+++ b/providers/fab/docs/cli-ref.rst
@@ -18,11 +18,6 @@
 FAB CLI Commands
 ================
 
-.. note::
-   The CLI commands below are sourced from the FAB provider by Airflow 2.9.0+.
-   Previously, they were part of core Airflow, so if you are using Airflow below 2.9.0 please see
-   the core Airflow documentation for the list of CLI commands and parameters available.
-
 .. argparse::
    :module: airflow.providers.fab.auth_manager.fab_auth_manager
    :func: get_parser
diff --git a/providers/fab/tests/unit/fab/auth_manager/api/auth/backend/test_kerberos_auth.py b/providers/fab/tests/unit/fab/auth_manager/api/auth/backend/test_kerberos_auth.py
index e57f34ce4b033..83708c6a0d74b 100644
--- a/providers/fab/tests/unit/fab/auth_manager/api/auth/backend/test_kerberos_auth.py
+++ b/providers/fab/tests/unit/fab/auth_manager/api/auth/backend/test_kerberos_auth.py
@@ -16,10 +16,7 @@
 # under the License.
 from __future__ import annotations
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.api.auth.backend.kerberos_auth import init_app
+from airflow.providers.fab.auth_manager.api.auth.backend.kerberos_auth import init_app
 
 
 class TestKerberosAuth:
diff --git a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/api_connexion_utils.py b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/api_connexion_utils.py
index 674549b432f89..1cd9c628cf572 100644
--- a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/api_connexion_utils.py
+++ b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/api_connexion_utils.py
@@ -18,13 +18,9 @@
 
 from contextlib import contextmanager
 
+from airflow.providers.fab.auth_manager.security_manager.override import EXISTING_ROLES
 from airflow.providers.fab.www.api_connexion.exceptions import EXCEPTIONS_LINK_MAP
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.security_manager.override import EXISTING_ROLES
-
 
 @contextmanager
 def create_test_client(app, user_name, role_name, permissions):
diff --git a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_role_and_permission_endpoint.py b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_role_and_permission_endpoint.py
index 76dd19237791d..a107d0988abe9 100644
--- a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_role_and_permission_endpoint.py
+++ b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_role_and_permission_endpoint.py
@@ -19,10 +19,11 @@
 import pytest
 from sqlalchemy import select
 
+from airflow.providers.fab.auth_manager.models import Role
+from airflow.providers.fab.auth_manager.security_manager.override import EXISTING_ROLES
 from airflow.providers.fab.www.api_connexion.exceptions import EXCEPTIONS_LINK_MAP
 from airflow.providers.fab.www.security import permissions
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from unit.fab.auth_manager.api_endpoints.api_connexion_utils import (
     assert_401,
     create_role,
@@ -31,10 +32,6 @@
     delete_user,
 )
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.models import Role
-    from airflow.providers.fab.auth_manager.security_manager.override import EXISTING_ROLES
-
 pytestmark = pytest.mark.db_test
 
 
diff --git a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_user_endpoint.py b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_user_endpoint.py
index 0b8b6eb2913fb..6a936d37fe841 100644
--- a/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_user_endpoint.py
+++ b/providers/fab/tests/unit/fab/auth_manager/api_endpoints/test_user_endpoint.py
@@ -25,7 +25,6 @@
 from airflow.providers.fab.www.security import permissions
 from airflow.utils.session import create_session
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 from unit.fab.auth_manager.api_endpoints.api_connexion_utils import (
     assert_401,
@@ -40,9 +39,7 @@
     from airflow.sdk import timezone
 
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.models import User
-
+from airflow.providers.fab.auth_manager.models import User
 
 pytestmark = pytest.mark.db_test
 
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_definition.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_definition.py
index 572cbee05e3db..b34f92875ba12 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_definition.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_definition.py
@@ -16,14 +16,11 @@
 # under the License.
 from __future__ import annotations
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands.definition import (
-        ROLES_COMMANDS,
-        SYNC_PERM_COMMAND,
-        USERS_COMMANDS,
-    )
+from airflow.providers.fab.auth_manager.cli_commands.definition import (
+    ROLES_COMMANDS,
+    SYNC_PERM_COMMAND,
+    USERS_COMMANDS,
+)
 
 
 class TestCliDefinition:
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_permissions_command.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_permissions_command.py
index cf4a0355647a6..234a18ef6175d 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_permissions_command.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_permissions_command.py
@@ -28,14 +28,11 @@
 import pytest
 
 from airflow.cli import cli_parser
+from airflow.providers.fab.auth_manager.cli_commands import permissions_command
+from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands import permissions_command
-    from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
-
 pytestmark = pytest.mark.db_test
 
 
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_role_command.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_role_command.py
index 2de83df4074e4..8be5f32c371bf 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_role_command.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_role_command.py
@@ -26,16 +26,12 @@
 import pytest
 
 from airflow.cli import cli_parser
+from airflow.providers.fab.auth_manager.cli_commands import role_command
+from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
+from airflow.providers.fab.www.security import permissions
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands import role_command
-    from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
-
-from airflow.providers.fab.www.security import permissions
-
 pytestmark = pytest.mark.db_test
 
 
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_sync_perm_command.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_sync_perm_command.py
index 12b5fefe27761..3e331a838766b 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_sync_perm_command.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_sync_perm_command.py
@@ -23,13 +23,10 @@
 import pytest
 
 from airflow.cli import cli_parser
+from airflow.providers.fab.auth_manager.cli_commands import sync_perm_command
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands import sync_perm_command
-
 pytestmark = pytest.mark.db_test
 
 
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_user_command.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_user_command.py
index eb785e303cd7e..23f5056ca8832 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_user_command.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_user_command.py
@@ -27,14 +27,11 @@
 import pytest
 
 from airflow.cli import cli_parser
+from airflow.providers.fab.auth_manager.cli_commands import user_command
+from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands import user_command
-    from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
-
 pytestmark = pytest.mark.db_test
 
 TEST_USER1_EMAIL = "test-user1@example.com"
diff --git a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_utils.py b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_utils.py
index 262ecd0477765..79ae13e79e127 100644
--- a/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_utils.py
+++ b/providers/fab/tests/unit/fab/auth_manager/cli_commands/test_utils.py
@@ -23,15 +23,12 @@
 import airflow
 from airflow.configuration import conf
 from airflow.exceptions import AirflowConfigException
+from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
 from airflow.providers.fab.www.extensions.init_appbuilder import AirflowAppBuilder
 from airflow.providers.fab.www.session import AirflowDatabaseSessionInterface
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from tests_common.test_utils.config import conf_vars
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.cli_commands.utils import get_application_builder
-
 
 @pytest.fixture
 def flask_app():
diff --git a/providers/fab/tests/unit/fab/auth_manager/models/test_anonymous_user.py b/providers/fab/tests/unit/fab/auth_manager/models/test_anonymous_user.py
index ea959bd25bfb2..44f3d606fdf92 100644
--- a/providers/fab/tests/unit/fab/auth_manager/models/test_anonymous_user.py
+++ b/providers/fab/tests/unit/fab/auth_manager/models/test_anonymous_user.py
@@ -17,10 +17,7 @@
 # under the License.
 from __future__ import annotations
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.models.anonymous_user import AnonymousUser
+from airflow.providers.fab.auth_manager.models.anonymous_user import AnonymousUser
 
 
 class TestAnonymousUser:
diff --git a/providers/fab/tests/unit/fab/auth_manager/schemas/test_user_schema.py b/providers/fab/tests/unit/fab/auth_manager/schemas/test_user_schema.py
index 91853b16eb3f0..033a09638374c 100644
--- a/providers/fab/tests/unit/fab/auth_manager/schemas/test_user_schema.py
+++ b/providers/fab/tests/unit/fab/auth_manager/schemas/test_user_schema.py
@@ -19,19 +19,15 @@
 import pytest
 from sqlalchemy import select
 
+from airflow.providers.fab.auth_manager.models import User
+from airflow.providers.fab.auth_manager.schemas.user_schema import (
+    user_collection_item_schema,
+    user_schema,
+)
 from airflow.utils import timezone
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
 from unit.fab.auth_manager.api_endpoints.api_connexion_utils import create_role, delete_role
 
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.models import User
-    from airflow.providers.fab.auth_manager.schemas.user_schema import (
-        user_collection_item_schema,
-        user_schema,
-    )
-
-
 TEST_EMAIL = "test@example.org"
 
 DEFAULT_TIME = "2021-01-09T13:59:56.336000+00:00"
diff --git a/providers/fab/tests/unit/fab/auth_manager/security_manager/test_constants.py b/providers/fab/tests/unit/fab/auth_manager/security_manager/test_constants.py
index 401b9b108262c..177b97b1d1b1e 100644
--- a/providers/fab/tests/unit/fab/auth_manager/security_manager/test_constants.py
+++ b/providers/fab/tests/unit/fab/auth_manager/security_manager/test_constants.py
@@ -16,10 +16,7 @@
 # under the License.
 from __future__ import annotations
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.security_manager.constants import EXISTING_ROLES
+from airflow.providers.fab.auth_manager.security_manager.constants import EXISTING_ROLES
 
 
 class TestFbSecurityManagerConstants:
diff --git a/providers/fab/tests/unit/fab/auth_manager/security_manager/test_override.py b/providers/fab/tests/unit/fab/auth_manager/security_manager/test_override.py
index 7b9e9696e5776..15f92196573b0 100644
--- a/providers/fab/tests/unit/fab/auth_manager/security_manager/test_override.py
+++ b/providers/fab/tests/unit/fab/auth_manager/security_manager/test_override.py
@@ -21,10 +21,7 @@
 
 import pytest
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
+from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
 
 
 class EmptySecurityManager(FabAirflowSecurityManagerOverride):
diff --git a/providers/fab/tests/unit/fab/auth_manager/test_fab_auth_manager.py b/providers/fab/tests/unit/fab/auth_manager/test_fab_auth_manager.py
index 85fb85dace903..3b025d6c68410 100644
--- a/providers/fab/tests/unit/fab/auth_manager/test_fab_auth_manager.py
+++ b/providers/fab/tests/unit/fab/auth_manager/test_fab_auth_manager.py
@@ -42,18 +42,13 @@
         DagDetails,
     )
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-from tests_common.test_utils.dag import sync_dag_to_db
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.fab_auth_manager import FabAuthManager
-    from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
-
 from airflow.providers.common.compat.security.permissions import (
     RESOURCE_ASSET,
     RESOURCE_ASSET_ALIAS,
     RESOURCE_BACKFILL,
 )
+from airflow.providers.fab.auth_manager.fab_auth_manager import FabAuthManager
+from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
 from airflow.providers.fab.www.security.permissions import (
     ACTION_CAN_ACCESS_MENU,
     ACTION_CAN_CREATE,
@@ -75,6 +70,7 @@
     RESOURCE_WEBSITE,
 )
 
+from tests_common.test_utils.dag import sync_dag_to_db
 from tests_common.test_utils.version_compat import AIRFLOW_V_3_1_PLUS
 
 if AIRFLOW_V_3_1_PLUS:
diff --git a/providers/fab/tests/unit/fab/auth_manager/test_models.py b/providers/fab/tests/unit/fab/auth_manager/test_models.py
index a092bd3e311be..96f0fca598e30 100644
--- a/providers/fab/tests/unit/fab/auth_manager/test_models.py
+++ b/providers/fab/tests/unit/fab/auth_manager/test_models.py
@@ -20,13 +20,10 @@
 
 from sqlalchemy import Column, MetaData, String, Table
 
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.models import (
-        add_index_on_ab_register_user_username_postgres,
-        add_index_on_ab_user_username_postgres,
-    )
+from airflow.providers.fab.auth_manager.models import (
+    add_index_on_ab_register_user_username_postgres,
+    add_index_on_ab_user_username_postgres,
+)
 
 _mock_conn = mock.MagicMock()
 _mock_conn.dialect = mock.MagicMock()
diff --git a/providers/fab/tests/unit/fab/auth_manager/test_security.py b/providers/fab/tests/unit/fab/auth_manager/test_security.py
index 75dec27d8b268..e2e33f5b7b352 100644
--- a/providers/fab/tests/unit/fab/auth_manager/test_security.py
+++ b/providers/fab/tests/unit/fab/auth_manager/test_security.py
@@ -30,28 +30,23 @@
 from flask_appbuilder.views import BaseView, ModelView
 from sqlalchemy import Column, Date, Float, Integer, String, delete, func, select
 
+from airflow.api_fastapi.app import get_auth_manager
 from airflow.exceptions import AirflowException
 from airflow.models import DagModel
 from airflow.models.dag import DAG
 from airflow.models.dagbundle import DagBundleModel
-from airflow.providers.fab.www.utils import CustomSQLAInterface
-
-from tests_common.test_utils.compat import ignore_provider_compatibility_error
-from tests_common.test_utils.config import conf_vars
-
-with ignore_provider_compatibility_error("2.9.0+", __file__):
-    from airflow.providers.fab.auth_manager.fab_auth_manager import FabAuthManager
-    from airflow.providers.fab.auth_manager.models import assoc_permission_role
-    from airflow.providers.fab.auth_manager.models.anonymous_user import AnonymousUser
-
-from airflow.api_fastapi.app import get_auth_manager
+from airflow.providers.fab.auth_manager.fab_auth_manager import FabAuthManager
+from airflow.providers.fab.auth_manager.models import assoc_permission_role
+from airflow.providers.fab.auth_manager.models.anonymous_user import AnonymousUser
+from airflow.providers.fab.auth_manager.security_manager.override import FabAirflowSecurityManagerOverride
 from airflow.providers.fab.www import app as application
 from airflow.providers.fab.www.security import permissions
 from airflow.providers.fab.www.security.permissions import ACTION_CAN_READ
+from airflow.providers.fab.www.utils import CustomSQLAInterface
 
 from tests_common.test_utils.asserts import assert_queries_count
+from tests_common.test_utils.config import conf_vars
 from tests_common.test_utils.db import clear_db_dag_bundles, clear_db_dags, clear_db_runs
-from tests_common.test_utils.mock_security_manager import MockSecurityManager
 from tests_common.test_utils.permissions import _resource_name
 from tests_common.test_utils.version_compat import AIRFLOW_V_3_1_PLUS
 from unit.fab.auth_manager.api_endpoints.api_connexion_utils import (
@@ -86,6 +81,14 @@
 log = logging.getLogger(__name__)
 
 
+class MockSecurityManager(FabAirflowSecurityManagerOverride):
+    """Mock Security Manager for testing purposes."""
+
+    VIEWER_VMS = {
+        "Airflow",
+    }
+
+
 class SomeModel(Model):
     id = Column(Integer, primary_key=True)
     field_string = Column(String(50), unique=True, nullable=False)
