message: LICENSE: Restore original Apache license
diff: -Copyright 2019 The TensorFlow Authors. All rights reserved.
  Apache License
  Version 2.0, January 2004
  @@ -188,7 +187,7 @@ Copyright 2019 The TensorFlow Authors. All rights reserved.
  same "printed page" as the copyright notice for easier
  identification within third-party archives.
  - Copyright 2017, The TensorFlow Authors.
  + Copyright [yyyy] [name of copyright owner]
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  