Removed obsolete Opera fix that now causes harm FS#2429

lib/exe/ajax.php

@@ -6,11 +6,6 @@
  * @author     Andreas Gohr <andi@splitbrain.org>
  */
 
-//fix for Opera XMLHttpRequests
-if(!count($_POST) && !empty($HTTP_RAW_POST_DATA)){
-    parse_str($HTTP_RAW_POST_DATA, $_POST);
-}
-
 if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../');
 require_once(DOKU_INC.'inc/init.php');
 //close session