Remove unused MonochromeApplication template code.

chrome/android/java/templates/MonochromeApplication.template

-// 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 {{package}};
-
-import android.content.Context;
-
-import com.android.webview.chromium.MonochromeLibraryPreloader;
-
-import org.chromium.base.library_loader.LibraryLoader;
-import org.chromium.base.library_loader.LibraryProcessType;
-import org.chromium.content.browser.ChildProcessCreationParams;
-
-/**
- * This is Application class for Monochrome.
- *
- * You shouldn't add anything else in this file, this class is split off from
- * normal chrome in order to access Android system API through Android WebView
- * glue layer and have monochrome specific code.
- */
-public class {{ monochrome_application_class }} extends {{ super_class }} {
-    @Override
-    public void onCreate() {
-        super.onCreate();
-        LibraryLoader.setNativeLibraryPreloader(new MonochromeLibraryPreloader());
-        // ChildProcessCreationParams is only needed for browser process, though it is
-        // created and set in all processes.
-        ChildProcessCreationParams.registerDefault(
-            new ChildProcessCreationParams(getPackageName(),
-                                           true /* isExternalService */,
-                                           LibraryProcessType.PROCESS_CHILD));
-    }
-}