[remoting android] Remove host It2Me implementation.

remoting/host/input_injector_android.cc

-// 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.
-
-#include "base/logging.h"
-#include "base/memory/ptr_util.h"
-#include "remoting/host/input_injector.h"
-
-namespace remoting {
-
-namespace {
-
-class InputInjectorAndroid : public InputInjector {
- public:
-  InputInjectorAndroid() {}
-
-  void InjectClipboardEvent(const protocol::ClipboardEvent& event) override {
-    NOTIMPLEMENTED();
-  }
-
-  void InjectKeyEvent(const protocol::KeyEvent& event) override {
-    NOTIMPLEMENTED();
-  }
-
-  void InjectTextEvent(const protocol::TextEvent& event) override {
-    NOTIMPLEMENTED();
-  }
-
-  void InjectMouseEvent(const protocol::MouseEvent& event) override {
-    NOTIMPLEMENTED();
-  }
-
-  void InjectTouchEvent(const protocol::TouchEvent& event) override {
-    NOTIMPLEMENTED();
-  }
-
-  void Start(
-      std::unique_ptr<protocol::ClipboardStub> client_clipboard) override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(InputInjectorAndroid);
-};
-
-}  // namespace
-
-// static
-std::unique_ptr<InputInjector> InputInjector::Create(
-    scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
-  return base::WrapUnique(new InputInjectorAndroid());
-}
-
-// static
-bool InputInjector::SupportsTouchEvents() {
-  return false;
-}
-
-}  // namespace remoting