Remove all blimp client code.

blimp/client/public/android/java/src/org/chromium/blimp_public/contents/EmptyBlimpContentsObserver.java

Index: blimp/client/public/android/java/src/org/chromium/blimp_public/contents/EmptyBlimpContentsObserver.java
diff --git a/blimp/client/public/android/java/src/org/chromium/blimp_public/contents/EmptyBlimpContentsObserver.java b/blimp/client/public/android/java/src/org/chromium/blimp_public/contents/EmptyBlimpContentsObserver.java
deleted file mode 100644
index 0150ff36968eb772a9e85980771f4e9475e771c3..0000000000000000000000000000000000000000
--- a/blimp/client/public/android/java/src/org/chromium/blimp_public/contents/EmptyBlimpContentsObserver.java
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.blimp_public.contents;
-
-/**
- * EmptyBlimpContentsObserver is a helper class that has an empty implementation of all the
- * methods in the {@link BlimpContentsObserver}. It is intented to be used by every class that
- * does not need to implement all the observer-methods.
- */
-public class EmptyBlimpContentsObserver implements BlimpContentsObserver {
-    @Override
-    public void onNavigationStateChanged() {}
-
-    @Override
-    public void onLoadingStateChanged(boolean loading) {}
-
-    @Override
-    public void onPageLoadingStateChanged(boolean loading) {}
-}