MessageUserType::deleteList

static function deleteList($filter)
{
	$entity = InternalsMessageAccessTable::getEntity();
	$connection = $entity->getConnection();
	return $connection->query(sprintf(
		'DELETE FROM %s WHERE %s',
		$connection->getSqlHelper()->quote($entity->getDbTableName()),
		MainEntityQuery::buildFilterSql(
			$entity,
			$filter
		)
	));
}