for::OnUserDelete

static function OnUserDelete($id)
{
	global $DB;
	$id = intval($id);
	if ($id > 0)
	{
		$rsUsers = $DB->Query("SELECT ID FROM b_socialservices_user WHERE USER_ID = ".$id." ", true);
		while ($arUserLink = $rsUsers->Fetch())
		{
			self::Delete($arUserLink["ID"]);
		}
		return true;
	}
	return false;
}