Fix header checkstyle warnings by removing trailing spaces.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1375780 13f79535-47bb-0310-9956-ffa450edef68

Author: netomi

LICENSE-header.txt

@@ -5,9 +5,9 @@
  * The ASF licenses this file to You 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.