Explicit type can be replaced by <>

Issue: SPR-13188

spring-context/src/test/java/example/scannable/ScopedProxyTestBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -35,7 +35,7 @@ public class ScopedProxyTestBean implements FooService {
 
 	@Override
 	public Future<String> asyncFoo(int id) {
-		return new AsyncResult<String>("bar");
+		return new AsyncResult<>("bar");
 	}
 
 	@Override