Update release notes for version 2.19.4.0

Signed-off-by: Sayali Gaikawad <[email protected]>

Author: gaiksaya

release-notes/opensearch-sql.release-notes-2.19.4.0.md

@@ -4,9 +4,3 @@ Compatible with OpenSearch and OpenSearch Dashboards version 2.19.4
 
 ### Bug Fixes
 * Bump commons-lang3 version to resolve CVE-2025-48924 ([#4693](https://github.com/opensearch-project/sql/pull/4693))
-
-### Enhancements
-* [Backport 2.19] Onboarding new maven snapshots publishing to s3 (sql) ([#4589](https://github.com/opensearch-project/sql/pull/4589))
-
-### Maintenance
-* [AUTO] Increment version to 2.19.4-SNAPSHOT ([#4168](https://github.com/opensearch-project/sql/pull/4168))