Remove unused imports from IGenericTaskFactory

[Copilot]

This PR addresses the linked review feedback by applying only the requested cleanup in IGenericTaskFactory.cs: remove unnecessary using directives and keep the file scoped to what it actually depends on.

• Scope

  • Updated a single file: Source/EvlWatcher/EvlWatcher/tasks/IGenericTaskFactory.cs
  • No behavioral or API changes

• Change

  • Removed unused framework imports (System*) and retained only the required project import.

• Resulting file shape

  using EvlWatcher.Config;
  
  namespace EvlWatcher.Tasks
  {
      public interface IGenericTaskFactory
      {
          IPBlockingLogTask CreateFromConfiguration(IPersistentTaskConfiguration config);
      }
  }

[devnulli]

gee this AI workflows surely escalate