Remove deprecated collection classes

[kotwanikunal]

Description

• Removes deprecated collection classes as a part of [Campaign] Replace Map, List, and Set in org.opensearch.common.collect with java.util references #6786

Issues Resolved

• Resolves [Campaign] Replace Map, List, and Set in org.opensearch.common.collect with java.util references #6786

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.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/13036/
• CommitID: 1a9e786
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.snapshots.SearchableSnapshotIT.testCacheFilesAreClosedAfterUse

• URL: https://build.ci.opensearch.org/job/gradle-check/13038/
• CommitID: 8ac635a
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov-commenter]

Codecov Report

Merging #6871 (8ac635a) into main (7b708c4) will increase coverage by 0.26%.
The diff coverage is n/a.

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@@             Coverage Diff              @@
##               main    #6871      +/-   ##
============================================
+ Coverage     70.52%   70.79%   +0.26%     
- Complexity    59112    59298     +186     
============================================
  Files          4814     4811       -3     
  Lines        283743   283716      -27     
  Branches      40915    40915              
============================================
+ Hits         200110   200852     +742     
+ Misses        67154    66392     -762     
+ Partials      16479    16472       -7     

see 491 files with indirect coverage changes

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[kotwanikunal]

Whitesource fix: #6878