remove license

Change-Id: I9752fb5940d5a5fcb5ca6790cb6c7b1135277ccd

paddle/fluid/distributed/thirdparty/round_robin.h

@@ -1,17 +1,3 @@
-// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
-//
-// 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.
-
 //                 ______  _____                 ______                _________
 //  ______________ ___  /_ ___(_)_______         ___  /_ ______ ______ ______  /
 //  __  ___/_  __ \__  __ \__  / __  __ \        __  __ \_  __ \_  __ \_  __  /