[Extensions] Remove the "use_movable_types" entry from idl/json files

chrome/common/extensions/api/signed_in_devices.idl

 // Copyright (c) 2013 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.
 
 // Use the <code>chrome.signedInDevices</code> API to get a list of devices
 // signed into chrome with the same account as the current profile.
-[use_movable_types=true] namespace signedInDevices {
+namespace signedInDevices {
   enum OS {
     win,
     mac,
     linux,
     chrome_os,
     android,
     ios,
     unknown
   };
 
@@ skipping 37 matching lines @@
     static void get(optional boolean isLocal, DeviceInfoCallback callback);
   };
 
   interface Events {
     // Fired when the DeviceInfo object of any of the signed in devices
     // changes, or when a device is added or removed.
     // |devices|: The array of all signed in devices.
     static void onDeviceInfoChange(DeviceInfo[] devices);
   };
 };