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

mojo/public/cpp/environment/lib/logging_only_environment.cc

Index: mojo/public/cpp/environment/lib/logging_only_environment.cc
diff --git a/mojo/public/cpp/environment/lib/logging_only_environment.cc b/mojo/public/cpp/environment/lib/logging_only_environment.cc
deleted file mode 100644
index 38b15b8656addc47d5b05f8a8d427580919c073b..0000000000000000000000000000000000000000
--- a/mojo/public/cpp/environment/lib/logging_only_environment.cc
+++ /dev/null
@@ -1,20 +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.
-
-// This is a minimal definition of |Environment| that includes only a logger.
-// This is just enough to be able to use |MOJO_LOG()| and related macros in
-// logging.h.
-
-#include "mojo/public/cpp/environment/environment.h"
-
-#include "mojo/public/cpp/environment/lib/default_logger.h"
-
-namespace mojo {
-
-// static
-const MojoLogger* Environment::GetDefaultLogger() {
-  return &internal::kDefaultLogger;
-}
-
-}  // namespace mojo