Remove manifest configuration #884

Job	Run time
CI (ubuntu-latest, 11, DB2-11.5) / Run tests	7m 46s
CI (ubuntu-latest, 11, MSSQL-2019-latest) / Run tests	1m 13s
CI (ubuntu-latest, 11, MariaDB-10.4) / Run tests	1m 45s
CI (ubuntu-latest, 11, MSSQL-2017-latest) / Run tests	1m 26s
CI (ubuntu-latest, 11, MySQL-5.7) / Run tests	1m 52s
CI (ubuntu-latest, 11, MySQL-5.6) / Run tests	2m 0s
CI (ubuntu-latest, 11, MySQL-8.0) / Run tests	1m 56s
CI (ubuntu-latest, 11, PostgreSQL-10) / Run tests	3m 46s
CI (ubuntu-latest, 11, PostgreSQL-11) / Run tests	3m 42s
CI (ubuntu-latest, 11, PostgreSQL-9) / Run tests	3m 45s
CI (ubuntu-latest, 11, SQL-templates) / Run tests	5m 39s
CI (ubuntu-latest, 17, MariaDB-10.4) / Run tests	1m 48s
CI (ubuntu-latest, 17, MSSQL-2019-latest) / Run tests	1m 22s
CI (ubuntu-latest, 17, MySQL-5.7) / Run tests	1m 53s
CI (ubuntu-latest, 17, PostgreSQL-11) / Run tests	3m 52s
CI (ubuntu-latest, 17, Oracle-23) / Run tests	1m 51s
Deploy to OSSRH / Deploy to OSSRH	40s
Deploy to OSSRH / Deploy (Oracle) to OSSRH	23s
	46m 39s

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