chore: Removed Privacy ATs

[pr9t]

PR description

Fixed Issue(s)

Closes #7347

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• Checked out our contribution guidelines?
• Considered documentation and added the doc-change-required label to this PR if updates are required.
• Considered the changelog and included an update if required.
• For database changes (e.g. KeyValueSegmentIdentifier) considered compatibility and performed forwards and backwards compatibility tests

Locally, you can run these tests to catch failures early:

• unit tests: ./gradlew build
• acceptance tests: ./gradlew acceptanceTest
• integration tests: ./gradlew integrationTest
• reference tests: ./gradlew ethereum:referenceTests:referenceTests

[macfarla]

@pr9t you'll need to add signoff to your commits to satisfy DCO - follow the instructions here https://github.com/hyperledger/besu/pull/7530/checks?check_run_id=29343327854

[macfarla]

(alternatively, you can close this PR and redo your changes with signoff, sometimes frankly that is easier!)

[macfarla]

the change itself looks fine :)

[pr9t]

@macfarla I have signed-off my commit in the same PR.

[macfarla]

@pr9t
can you run this locally -
./gradlew compileTestJava
there are a few more classes that extended ParameterizedEnclaveTestBase that need removing as well eg PrivGetPrivateTransactionAcceptanceTest

[pr9t]

@macfarla I have removed the classes that extend PrivateLogFilterAcceptanceTest and FlexiblePrivacyAcceptanceTestBase. The results are as follows:

• unit tests were successful
• acceptance tests failed
• The command ./gradlew compileTestJava was successful.

[macfarla]

LGTM - thanks for your contribution @pr9t 🚀