OpenLineCounter::removeInvalidCounterAgent

static function removeInvalidCounterAgent()
{
	global $DB;

	$DB->Query("
		DELETE bimu FROM b_im_message_unread bimu 
		WHERE NOT EXISTS(SELECT 1 FROM b_im_relation bir WHERE bir.CHAT_ID=bimu.CHAT_ID AND bir.USER_ID=bimu.USER_ID)
		", true);

	CounterService::clearCache();

	return '';
}