db-schema/db_scripts/diff/15415.down

use provisioning;
set autocommit=0;

SELECT id INTO @pref_id FROM voip_preferences WHERE attribute='rerouting_mode';
DELETE FROM voip_preferences_enum WHERE preference_id=@pref_id;
DELETE FROM voip_preferences WHERE id=@pref_id;

DELETE FROM voip_preferences WHERE attribute = "rerouting_codes";

commit;