$cefIDs = implode(',', $cefIDs);
$sql = "DELETE FROM civicrm_entity_file where id IN ( $cefIDs )";
CRM_Core_DAO::executeQuery($sql);
$cefIDs = implode(',', $cefIDs);
$sql = "DELETE FROM civicrm_entity_file where id IN ( $cefIDs )";
CRM_Core_DAO::executeQuery($sql);