Remove all blimp client code.

blimp/client/app/android/java/src/org/chromium/blimp/app/settings/AppBlimpPreferenceScreen.java

Index: blimp/client/app/android/java/src/org/chromium/blimp/app/settings/AppBlimpPreferenceScreen.java
diff --git a/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/AppBlimpPreferenceScreen.java b/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/AppBlimpPreferenceScreen.java
deleted file mode 100644
index 068b0ad995a2f46d38bc5810c2dc1201fc7b8839..0000000000000000000000000000000000000000
--- a/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/AppBlimpPreferenceScreen.java
+++ /dev/null
@@ -1,29 +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.app.settings;
-
-import android.os.Bundle;
-import android.preference.PreferenceFragment;
-
-import org.chromium.blimp.app.BlimpEnvironment;
-import org.chromium.blimp.app.R;
-import org.chromium.blimp_public.BlimpClientContext;
-
-/**
- * Fragment to display blimp client and engine version related info.
- */
-public class AppBlimpPreferenceScreen extends PreferenceFragment {
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getActivity().setTitle(R.string.about_blimp_preferences);
-
-        setPreferenceScreen(getPreferenceManager().createPreferenceScreen(getActivity()));
-
-        BlimpClientContext blimpClientContext =
-                BlimpEnvironment.getInstance().getBlimpClientContext();
-        blimpClientContext.attachBlimpPreferences(this);
-    }
-}