[#2007] Minor test clean up #4149

Job	Run time
Test with Java 17	3m 11s
Test with MariaDB	3m 17s
Run examples in 'session-example' on MySQL	1m 48s
Test with Java 20	3m 12s
Test with MySQL	4m 16s
Run examples in 'session-example' on PostgreSQL	1m 50s
Test with Java 21	3m 18s
Test with PostgreSQL	3m 30s
Run examples in 'native-sql-example' on PostgreSQL	1m 47s
Test with Java 23	3m 23s
Test with MSSQLServer	4m 7s
Test with Java 24-ea	3m 15s
Test with CockroachDB	6m 17s
Test with Java 25-ea	3m 12s
Test with Db2	5m 12s
Test with Oracle	4m 46s
	56m 21s

Provide feedback