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

chrome/common/extensions/api/sync_file_system.idl

Index: chrome/common/extensions/api/sync_file_system.idl
diff --git a/chrome/common/extensions/api/sync_file_system.idl b/chrome/common/extensions/api/sync_file_system.idl
index 27e0257d4bc98785e604dec5222437e3cf6cc9e9..711625661e9148a4fc0794c453a4a8672ca718b9 100644
--- a/chrome/common/extensions/api/sync_file_system.idl
+++ b/chrome/common/extensions/api/sync_file_system.idl
@@ -8,7 +8,7 @@
 // caching usage so that the same data can be available across different
 // clients. Read <a href="app_storage.html">Manage Data</a> for more on using
 // this API.
-[use_movable_types=true] namespace syncFileSystem {
+namespace syncFileSystem {
   enum SyncAction {
     added, updated, deleted
   };