Merge branch '2.1.x'

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/GroovyCompiler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2018 the original author or authors.
+ * Copyright 2012-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -307,7 +307,6 @@ public class GroovyCompiler {
 
 	private static class MainClass {
 
-		@SuppressWarnings("unchecked")
 		public static ClassNode get(CompilationUnit source) {
 			return get(source.getAST().getClasses());
 		}