Update settings/ajax/removegroup.php

$l->t added for error message

settings/ajax/removegroup.php

@@ -13,5 +13,5 @@ if( OC_Group::deleteGroup( $name )) {
 	OC_JSON::success(array("data" => array( "groupname" => $name )));
 }
 else{
-	OC_JSON::error(array("data" => array( "message" => "Unable to delete group" )));
+	OC_JSON::error(array("data" => array( "message" => $l->t("Unable to delete group") )));
 }