ParametersTable::deleteByFilter

static function deleteByFilter($filter)
{
	if (empty($filter))
		throw new BitrixMainArgumentNullException("filter");

	$result = new BitrixMainEntityDeleteResult();

	$dbResult = static::getList(
		array(
			"select" => array("ID"),
			"filter" => $filter,
		)
	);
	while ($ar = $dbResult->fetch())
		static::delete($ar["ID"]);

	return $result;
}