message: Remove repeated license.
diff: //
  ///////////////////////////////////////////////////////////////////////////////
  -// Licensed under the Apache License, Version 2.0 (the "License");
  -// you may not use this file except in compliance with the License.
  -// You may obtain a copy of the License at
  -//
  -// http://www.apache.org/licenses/LICENSE-2.0
  -//
  -// Unless required by applicable law or agreed to in writing, software
  -// distributed under the License is distributed on an "AS IS" BASIS,
  -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  -// See the License for the specific language governing permissions and
  -// limitations under the License.
  -//
  -///////////////////////////////////////////////////////////////////////////////
  #include "tink/python/cc/cc_tink_config.h"
  #include "tink/config/tink_config.h"
  