Remove unused classes

[adnapibar]

Description

These internal classes are not used anymore and can be safely removed.

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

Signed-off-by: Rabi Panda adnapibar@gmail.com

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/6912/
• CommitID: ea40d12
  Please examine the workflow log, locate, and copy-paste the failure below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[adnapibar]

#4881

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/6915/
• CommitID: ea40d12

[kotwanikunal]

I can see that some of the classes are public and are not marked as opensearch.internal. Should we call this out within the breaking changes?

[adnapibar]

I can see that some of the classes are public and are not marked as opensearch.internal. Should we call this out within the breaking changes?

Sure, which one is not marked as opensearch.internal ?

[kotwanikunal]

I can see that some of the classes are public and are not marked as opensearch.internal. Should we call this out within the breaking changes?

Sure, which one is not marked as opensearch.internal ?

My bad. I was looking at the header docs instead of class documentation.