/**
  * Delete a translation link
  */
 function doDelete($fromLang, $fromId, $toLang, $toId)
 {
     global $wgOut;
     TranslationLink::writeLog(TranslationLink::ACTION_DELETE, $fromLang, NULL, $fromId, NULL, $toLang, "unknown", $toId, "TranslationLinkOverride");
     $link = new TranslationLink();
     $link->fromAID = $fromId;
     $link->fromLang = $fromLang;
     $link->toAID = $toId;
     $link->toLang = $toLang;
     $wgOut->setArticleBodyOnly(true);
     if ($link->delete()) {
         $wgOut->addHTML(json_encode(array('success' => true)));
     } else {
         $wgOut->addHTML(json_encode(array('success' => false)));
     }
 }