Fixes gzbridge port for a local installation with deactivated authentication

Change-Id: Ib385c3095ee14890b89be62ce83a4e1866b871e3

gz3d/src/gziface.js

@@ -53,9 +53,6 @@ GZ3D.GZIface.prototype.connect = function() {
   if (GZ3D.webSocketToken !== undefined) {
     url = url + '/?token=' + GZ3D.webSocketToken;
   }
-  else {
-    url = 'ws://' + location.hostname + ':7681';
-  }
 
   this.webSocket = new ROSLIB.Ros({
     url : url