Make the fuchsia mojo/public repo the source of truth.

mojo/public/js/threading.js

Index: mojo/public/js/threading.js
diff --git a/mojo/public/js/threading.js b/mojo/public/js/threading.js
deleted file mode 100644
index cfe50376e1911d32efe364b2b7e180cd7c6a2c3a..0000000000000000000000000000000000000000
--- a/mojo/public/js/threading.js
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2014 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.
-
-// Module "mojo/public/js/threading"
-//
-// Note: This file is for documentation purposes only. The code here is not
-// actually executed. The real module is implemented natively in Mojo.
-//
-// This module provides a way for a Mojo application implemented in JS
-// to exit by quitting the current message loop. This module is not
-// intended to be used by Mojo JS application started by the JS
-// content handler.
-
-while (1);
-
-/**
- * Quits the current message loop, esssentially:
- * base::MessageLoop::current()->QuitNow();
-*/
-function quit() { [native code] }