Revert copyright IDEA-CR-29223 (IDEA-186327)

plugins/groovy/test/org/jetbrains/plugins/groovy/refactoring/introduceParameter/GrIntroduceParameterTest.groovy

@@ -1,4 +1,18 @@
-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * 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 org.jetbrains.plugins.groovy.refactoring.introduceParameter
 
 import com.intellij.openapi.editor.Editor