Update release notes for version 2.19.4.0

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

Author: gaiksaya

release-notes/opensearch-query-insights.release-notes-2.19.4.0.md

@@ -3,11 +3,5 @@
 Compatible with OpenSearch and OpenSearch Dashboards version 2.19.4
 
 ### Bug Fixes
-* Fix missing check for time range validation that from timestamp is before to timestamp ([#413](https://github.com/opensearch-project/query-insights/pull/413))
-* [BUG FIX] Fix-flaky-ReaderIT ([#331](https://github.com/opensearch-project/query-insights/pull/331))
-
-### Enhancements
-* [Backport 2.19] Onboarding new maven snapshots publishing to s3 (query-insights) ([#469](https://github.com/opensearch-project/query-insights/pull/469))
-
-### Maintenance
-* [AUTO] Increment version to 2.19.4-SNAPSHOT ([#408](https://github.com/opensearch-project/query-insights/pull/408))
+* Fix missing check for time range validation that from timestamp is before to timestamp ([#419](https://github.com/opensearch-project/query-insights/pull/419))
+* Fix-flaky-ReaderIT ([#402](https://github.com/opensearch-project/query-insights/pull/402))