Remove deprecated classes for Rounding

[ketanv3]

Description

Joda based Rounding class was deprecated in 87481a0 and Java based Rounding class was introduced. The deprecated classes aren't used anywhere outside some tests and benchmarks, so this PR removes it completely.

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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]

Compatibility status:

Checks if related components are compatible with change e67efeb

Incompatible components

Incompatible components: [https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/neural-search.git]

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/29125/
• CommitID: e67efeb

[codecov]

Codecov Report

Merging #10956 (e67efeb) into main (0c9fc21) will decrease coverage by 0.12%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main   #10956      +/-   ##
============================================
- Coverage     71.23%   71.12%   -0.12%     
+ Complexity    58730    58661      -69     
============================================
  Files          4872     4870       -2     
  Lines        276707   276539     -168     
  Branches      40222    40190      -32     
============================================
- Hits         197124   196685     -439     
- Misses        63115    63442     +327     
+ Partials      16468    16412      -56     

see 490 files with indirect coverage changes