* This method is used to delete any existing survey. id of the group
* to be deleted is required field in $params array
*
- * @param array $params (reference) array containing id of the group
+ * @param array $params array containing id of the group
* to be deleted
*
- * @return array (referance) returns flag true if successfull, error
- * message otherwise
+ * @return array api result array
* {@getfields survey_delete}
* @access public
*/