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

mojo/public/go/system/system_linux.go

Index: mojo/public/go/system/system_linux.go
diff --git a/mojo/public/go/system/system_linux.go b/mojo/public/go/system/system_linux.go
deleted file mode 100644
index ecd560fd3db25ad4d38cb765d2eb31dadd5eb77f..0000000000000000000000000000000000000000
--- a/mojo/public/go/system/system_linux.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2015 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.
-// +build include_mojo_cgo
-
-package system
-
-import "mojo/public/platform/native_cgo"
-
-// Linux uses the CGo based system implementation.
-func init() {
-	sysImpl = &native_cgo.CGoSystem{}
-}