Remove all blimp client code.

blimp/client/core/settings/android/java/src/org/chromium/blimp/core/settings/EmptySettingsObserver.java

Index: blimp/client/core/settings/android/java/src/org/chromium/blimp/core/settings/EmptySettingsObserver.java
diff --git a/blimp/client/core/settings/android/java/src/org/chromium/blimp/core/settings/EmptySettingsObserver.java b/blimp/client/core/settings/android/java/src/org/chromium/blimp/core/settings/EmptySettingsObserver.java
deleted file mode 100644
index dae42a56f3a5d8f88b8246eea4b6c70f078a155d..0000000000000000000000000000000000000000
--- a/blimp/client/core/settings/android/java/src/org/chromium/blimp/core/settings/EmptySettingsObserver.java
+++ /dev/null
@@ -1,24 +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.core.settings;
-
-/**
- * EmptySettingsObserver is a helper class that has an empty implementation of all the
- * methods in the {@link SettingsObserver}. It is intented to be used by every class that
- * does not need to implement all the observer-methods.
- */
-public class EmptySettingsObserver implements SettingsObserver {
-    @Override
-    public void onBlimpModeEnabled(boolean enable) {}
-
-    @Override
-    public void onShowNetworkStatsChanged(boolean enable) {}
-
-    @Override
-    public void onRecordWholeDocumentChanged(boolean enable) {}
-
-    @Override
-    public void onRestartRequired() {}
-}