[Backport 2.12] Remove PR11626 from release notes

[andrross]

This will be shipped in 2.13.

The release notes entry was removed from main in #12428

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 7f2628d

Incompatible components

Skipped components

Compatible components

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

[github-actions]

❕ Gradle check result for 7f2628d: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.remotestore.RemoteStoreStatsIT.testDownloadStatsCorrectnessSinglePrimaryMultipleReplicaShards

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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.05%. Comparing base (2c355ce) to head (7f2628d).
Report is 1 commits behind head on 2.12.

Additional details and impacted files

@@             Coverage Diff              @@
##               2.12   #12448      +/-   ##
============================================
- Coverage     71.24%   71.05%   -0.20%     
+ Complexity    59923    59823     -100     
============================================
  Files          4939     4939              
  Lines        281814   281815       +1     
  Branches      41272    41272              
============================================
- Hits         200790   200242     -548     
- Misses        64053    64664     +611     
+ Partials      16971    16909      -62     

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