[Rust] Add table de-registration to DataFusion ExecutionContext

[asfimport]

Table de-registration, as discussed at https://lists.apache.org/thread.html/r0b3bc62a720c204c5bbe26d8157963276f7d61c05fcbad7eaf2ae9ff%40%3Cdev.arrow.apache.org%3E

Reporter: Marc Prud'hommeaux

PRs and other links:

• GitHub Pull Request #9445

_{Note: This issue was originally created as ARROW-11557. Please see the migration documentation for further details.}

[asfimport]

Andrew Lamb / @alamb:
Issue resolved by pull request 9445
#9445