Remove DBErrorDetailsProvider #1217

Job	Run time
build (mysql-plugin)	1h 18m 59s
build (postgresql-plugin)	32m 35s
build (oracle-plugin)	2h 11m 54s
build (mssql-plugin)	1h 18m 15s
build (cloudsql-mysql-plugin)	1h 18m 18s
build (cloudsql-postgresql-plugin)	7m 11s
	6h 47m 12s

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