Remove unused deleteAllByEntityFQN and fix test comment scope

- Remove dead deleteAllByEntityFQN() method (cleanup uses
  deleteAllByEntityFQNPrefix instead)
- Narrow test section comment to reference only #27041 since
  the tests cover profiler data cleanup, not entity_extension
  time series

Author: RajdeepKushwaha5

openmetadata-integration-tests/src/test/java/org/openmetadata/it/tests/TableResourceIT.java

@@ -5850,7 +5850,7 @@ void test_listTablesWithColumnTags_performance(TestNamespace ns) {
   }
 
   // ===================================================================
-  // TIMESERIES CLEANUP ON HARD DELETE TESTS (fixes #27041, #27042)
+  // TABLE PROFILER TIMESERIES CLEANUP ON HARD DELETE TESTS (fixes #27041)
   // ===================================================================
 
   /**

openmetadata-service/src/main/java/org/openmetadata/service/jdbi3/EntityTimeSeriesDAO.java

@@ -532,14 +532,6 @@ default void delete(String entityFQNHash, String extension) {
     delete(getTimeSeriesTableName(), entityFQNHash, extension);
   }
 
-  @SqlUpdate("DELETE FROM <table> WHERE entityFQNHash = :entityFQNHash")
-  void deleteAllByEntityFQN(
-      @Define("table") String table, @BindFQN("entityFQNHash") String entityFQN);
-
-  default void deleteAllByEntityFQN(String entityFQN) {
-    deleteAllByEntityFQN(getTimeSeriesTableName(), entityFQN);
-  }
-
   @SqlUpdate(
       "DELETE FROM <table> WHERE entityFQNHash = :entityFQNHash OR entityFQNHash LIKE :prefix")
   void deleteAllByEntityFQNPrefixInternal(