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

chrome/common/extensions/api/streams_private.idl

Index: chrome/common/extensions/api/streams_private.idl
diff --git a/chrome/common/extensions/api/streams_private.idl b/chrome/common/extensions/api/streams_private.idl
index 72764c26d54e524f9eba39b3d09b0d4a3d75dad3..ed24130849d4bdc651d5c3629e2d511153989ae3 100644
--- a/chrome/common/extensions/api/streams_private.idl
+++ b/chrome/common/extensions/api/streams_private.idl
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 // Streams Private API.
-[use_movable_types=true] namespace streamsPrivate {
+namespace streamsPrivate {
   dictionary StreamInfo {
     // The MIME type of the intercepted URL request.
     DOMString mimeType;