Remove webrtc/examples/android/media_demo.

webrtc/examples/android/media_demo/src/org/webrtc/webrtcdemo/NativeWebRtcContextRegistry.java

-/*
- *  Copyright (c) 2013 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.
- */
-
-package org.webrtc.webrtcdemo;
-
-import android.content.Context;
-
-public class NativeWebRtcContextRegistry {
-  static {
-    System.loadLibrary("webrtcdemo-jni");
-  }
-
-  public native void register(Context context);
-  public native void unRegister();
-}