Remove license header from PR template (uxlfoundation#2223)

* Update .licenserc.yaml

* Update Pull_Request_template.md

.github/.licenserc.yaml

@@ -58,6 +58,7 @@ header:
     - 'requirements*.txt'
     # Some files from .ci/.github
     - '.github/CODEOWNERS'
+    - '.github/Pull_Request_template.md'
     - '.github/renovate.json'
     # Specific files
     - 'setup.cfg'

.github/Pull_Request_template.md

@@ -1,19 +1,3 @@
-<!--
-  ~ Copyright 2020 Intel Corporation
-  ~
-  ~ 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.
--->
-
 ## Description
 
 _Add a comprehensive description of proposed changes_