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

mojo/public/python/src/python_system_helper.h

-// 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.
-
-#ifndef MOJO_PUBLIC_PYTHON_SRC_PYTHON_SYSTEM_HELPER_H_
-#define MOJO_PUBLIC_PYTHON_SRC_PYTHON_SYSTEM_HELPER_H_
-
-// Python must be the first include, as it defines preprocessor variable without
-// checking if they already exist.
-#include <Python.h>
-
-#include <map>
-
-#include "mojo/public/cpp/bindings/callback.h"
-#include "mojo/public/python/src/common.h"
-
-
-namespace mojo {
-namespace python {
-// Create a mojo::Closure from a callable python object. If an error occurs
-// while executing callable, the closure will quit the current run loop.
-Closure BuildClosure(PyObject* callable);
-
-// Create a new PythonAsyncWaiter object. Ownership is passed to the caller.
-PythonAsyncWaiter* NewAsyncWaiter();
-
-}  // namespace python
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_PYTHON_SRC_PYTHON_SYSTEM_HELPER_H_