CIBlockSectionPropertyLink::DeleteByIBlock

static function DeleteByIBlock($IBLOCK_ID)
{
	global $DB;
	$IBLOCK_ID = (int)$IBLOCK_ID;
	$DB->Query("DELETE FROM b_iblock_section_property WHERE IBLOCK_ID = ".$IBLOCK_ID);
	$DB->Query("UPDATE b_iblock SET SECTION_PROPERTY = 'N' WHERE ID = ".$IBLOCK_ID);
	BitrixIblockPropertyIndexManager::deleteIndex($IBLOCK_ID);
	CIBlock::CleanCache($IBLOCK_ID);
}