Revert of Add the url attribute to the IceCandidate (Java Wrapper)

webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 390 matching lines @@
         });
     httpConnection.send();
   }
 
   // Converts a Java candidate to a JSONObject.
   private JSONObject toJsonCandidate(final IceCandidate candidate) {
     JSONObject json = new JSONObject();
     jsonPut(json, "label", candidate.sdpMLineIndex);
     jsonPut(json, "id", candidate.sdpMid);
     jsonPut(json, "candidate", candidate.sdp);
-    jsonPut(json, "url", candidate.serverUrl);
     return json;
   }
 
   // Converts a JSON candidate to a Java object.
   IceCandidate toJavaCandidate(JSONObject json) throws JSONException {
-    return new IceCandidate(json.getString("id"), json.getInt("label"), json.getString("candidate"),
-        json.getString("url"));
+    return new IceCandidate(
+        json.getString("id"), json.getInt("label"), json.getString("candidate"));
   }
 }