Android: Remove unneeded RegisterNatives() calls

net/android/cellular_signal_strength.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 "net/android/cellular_signal_strength.h"
 
 #include "base/android/context_utils.h"
 #include "jni/AndroidCellularSignalStrength_jni.h"
 
 namespace net {
@@ skipping 32 matching lines @@
       Java_AndroidCellularSignalStrength_getSignalStrengthLevel(
           base::android::AttachCurrentThread(),
           base::android::GetApplicationContext());
   if (signal_strength_level_tmp == ERROR_NOT_SUPPORTED)
     return false;
 
   *signal_strength_level = signal_strength_level_tmp;
   return true;
 }
 
-bool Register(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
 }  // namespace cellular_signal_strength
 
 }  // namespace android
 
-}  // namespace net
+}  // namespace net