remove silly copyright

openid-connect-server/src/main/java/org/mitre/openid/connect/util/DateUtil.java

@@ -1,18 +1,3 @@
-/*
- * Copyright 2014 arielak.
- *
- * 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.
- */
 package org.mitre.openid.connect.util;
 
 import java.text.ParseException;