Android: Remove unneeded RegisterNatives() calls

ui/events/android/events_jni_registrar.cc

-// Copyright 2015 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 "ui/events/android/events_jni_registrar.h"
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_registrar.h"
-#include "base/macros.h"
-#include "ui/events/android/key_event_utils.h"
-#include "ui/events/android/motion_event_android.h"
-
-namespace ui {
-namespace events {
-namespace android {
-
-static base::android::RegistrationMethod kAndroidRegisteredMethods[] = {
-    {"MotionEventAndroid", ui::MotionEventAndroid::RegisterMotionEventAndroid},
-    {"KeyEventUtils", RegisterKeyEvent},
-};
-
-bool RegisterJni(JNIEnv* env) {
-  return RegisterNativeMethods(env, kAndroidRegisteredMethods,
-                               arraysize(kAndroidRegisteredMethods));
-}
-
-}  // namespace android
-}  // namespace events
-}  // namespace ui