Android: Remove unneeded RegisterNatives() calls

device/power_save_blocker/power_save_blocker_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 "device/power_save_blocker/power_save_blocker_jni_registrar.h"
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_registrar.h"
-#include "base/macros.h"
-#include "device/power_save_blocker/power_save_blocker_android.h"
-
-namespace device {
-namespace android {
-namespace {
-
-const base::android::RegistrationMethod kRegisteredMethods[] = {
-    {"PowerSaveBlock", device::RegisterPowerSaveBlocker},
-};
-
-}  // namespace
-
-bool RegisterPowerSaveBlockerJni(JNIEnv* env) {
-  return RegisterNativeMethods(env, kRegisteredMethods,
-                               arraysize(kRegisteredMethods));
-}
-
-}  // namespace android
-}  // namespace device