/**
* Delete config field values
*
* @param string $path
* @param string $scope (default|stores|websites|config)
* @return Mage_Core_Model_Resource_Setup
*/
public function deleteConfigData($path, $scope = null)
{
$sql = "delete from " . $this->getTable('core/config_data') . " where path='" . $path . "'";
if ($scope) {
$sql .= " and scope='" . $scope . "'";
}
$this->_conn->raw_query($sql);
return $this;
}
