docs: remove duplicate copyright notice

Author: dimakis

cmd/kar-controllers/main.go

@@ -1,19 +1,4 @@
 /*
-Copyright 2017 The Kubernetes Authors.
-
-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.
-*/
-/*
 Copyright 2019, 2021 The Multi-Cluster App Dispatcher Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");