function bp_activity_at_mention_delete_notification( $activity_ids_deleted = array() ) {
	// Let's delete all without checking if content contains any mentions
	// to avoid a query to get the activity.
	if ( ! empty( $activity_ids_deleted ) ) {
		foreach ( $activity_ids_deleted as $activity_id ) {
			bp_notifications_delete_all_notifications_by_type( $activity_id, buddypress()->activity->id );
		}
	}
}