Extension never requested and never used.
MariaDB [eswikibooks_p]> show tables like 'flagged%'; +------------------------------------+ | Tables_in_eswikibooks_p (flagged%) | +------------------------------------+ | flaggedimages | | flaggedpage_config | | flaggedpage_pending | | flaggedpages | | flaggedrevs | | flaggedrevs_promote | | flaggedrevs_statistics | | flaggedrevs_tracking | | flaggedtemplates | +------------------------------------+ 9 rows in set (0.00 sec)