fix for ci

* add copyright
* remove unused function

pkg/logger/hub.go

@@ -1,3 +1,20 @@
+/*
+ * Copyright (c) 2017, MegaEase
+ * All rights reserved.
+ *
+ * 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 logger
 
 import (
@@ -29,13 +46,6 @@ func (lh *logHub) register(name string, logger *zap.SugaredLogger) {
 	lh.loggers[name] = logger
 }
 
-func (lh *logHub) unregister(name string) {
-	lh.mu.Lock()
-	defer lh.mu.Unlock()
-
-	delete(lh.loggers, name)
-}
-
 // sync syncs all loggers.
 func (lh *logHub) sync() {
 	lh.mu.RLock()

pkg/logger/logger_test.go

@@ -1,3 +1,20 @@
+/*
+ * Copyright (c) 2017, MegaEase
+ * All rights reserved.
+ *
+ * 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 logger
 
 import (