Remove all blimp client code.

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

Index: blimp/client/app/android/java/src/org/chromium/blimp/app/settings/Preferences.java
diff --git a/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/Preferences.java b/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/Preferences.java
deleted file mode 100644
index f246631623803725ccc46fc2038c8e873a9c5d18..0000000000000000000000000000000000000000
--- a/blimp/client/app/android/java/src/org/chromium/blimp/app/settings/Preferences.java
+++ /dev/null
@@ -1,45 +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.app.Fragment;
-import android.content.Intent;
-import android.os.Bundle;
-import android.preference.Preference;
-import android.preference.PreferenceFragment;
-import android.support.v7.app.AppCompatActivity;
-
-/**
- * An activity to display the settings and version info.
- */
-public class Preferences
-        extends AppCompatActivity implements PreferenceFragment.OnPreferenceStartFragmentCallback {
-    private static final String EXTRA_SHOW_FRAGMENT = "show_fragment";
-    private static final String EXTRA_SHOW_FRAGMENT_ARGUMENTS = "show_fragment_args";
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        String initialFragment = getIntent().getStringExtra(EXTRA_SHOW_FRAGMENT);
-        Bundle initialArguments = getIntent().getBundleExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS);
-
-        if (initialFragment == null) initialFragment = AppBlimpPreferenceScreen.class.getName();
-        Fragment fragment = Fragment.instantiate(this, initialFragment, initialArguments);
-
-        getFragmentManager().beginTransaction().replace(android.R.id.content, fragment).commit();
-    }
-
-    @Override
-    public boolean onPreferenceStartFragment(
-            PreferenceFragment preferenceFragment, Preference preference) {
-        Intent intent = new Intent(Intent.ACTION_MAIN);
-        intent.setClass(this, getClass());
-        intent.putExtra(EXTRA_SHOW_FRAGMENT, preference.getFragment());
-        intent.putExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS, preference.getExtras());
-        startActivity(intent);
-        return true;
-    }
-}