Remove comment header from pull_request_template.md

.github/pull_request_template.md

@@ -1,21 +1,3 @@
-<!--
-
-    Licensed to the Apache Software Foundation (ASF) under one or more
-    contributor license agreements.  See the NOTICE file distributed with
-    this work for additional information regarding copyright ownership.
-    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.
-    See the License for the specific language governing permissions and
-    limitations under the License.
-
--->
 <!-- Uncomment and fill this section if your PR is not trivial
 [ ] An issue should be filed for the change unless this is a trivial change (fixing a typo or similar). One issue should ideally be fixed by not more than one commit and the other way round, each commit should fix just one issue, without pulling in other changes.
 [ ] Each commit in the pull request should have a meaningful and properly spelled subject line and body. Copying the title of the associated issue is typically enough. Please include the issue number in the commit message prefixed by #.