remove license boilerplate file headers

see also https://infra.apache.org/apply-license.html#copy-per-file

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2020-present Ext-Creators
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

discord/ext/ipc/__init__.py

@@ -1,16 +1,3 @@
-"""
-    Copyright 2021 Ext-Creators
-    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.
-"""
-
 import collections
 
 from discord.ext.ipc.client import Client

discord/ext/ipc/client.py

@@ -1,16 +1,3 @@
-"""
-    Copyright 2021 Ext-Creators
-    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.
-"""
-
 import asyncio
 import logging
 import typing

discord/ext/ipc/errors.py

@@ -1,17 +1,3 @@
-"""
-    Copyright 2020 Ext-Creators
-    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.
-"""
-
-
 class IPCError(Exception):
     """Base IPC exception class"""
 

discord/ext/ipc/server.py

@@ -1,16 +1,3 @@
-"""
-    Copyright 2020 Ext-Creators
-    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.
-"""
-
 import logging
 
 import aiohttp.web