Remove RadioData from geolocation

content/browser/geolocation/empty_device_data_provider.cc

 // Copyright (c) 2011 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 "content/browser/geolocation/empty_device_data_provider.h"
 
-// No platform has (cellular) radio data provider yet.
-// static
-template<>
-RadioDataProviderImplBase* RadioDataProvider::DefaultFactoryFunction() {
-  return new EmptyDeviceDataProvider<RadioData>();
-}
-
 // Only define for platforms that lack a real wifi data provider.
 #if !defined(OS_WIN) && !defined(OS_MACOSX) && !defined(OS_LINUX)
 // static
 template<>
 WifiDataProviderImplBase* WifiDataProvider::DefaultFactoryFunction() {
   return new EmptyDeviceDataProvider<WifiData>();
 }
 #endif