Stop to writing to STD_OUT in tests

spring-context/src/test/java/org/springframework/core/task/NoOpRunnable.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -17,7 +17,7 @@
 package org.springframework.core.task;
 
 /**
- * A no-op Runnable implementation.
+ * A no-op {@link Runnable} implementation.
  *
  * @author Rick Evans
  */
@@ -26,7 +26,6 @@ public class NoOpRunnable implements Runnable {
 	@Override
 	public void run() {
 		// explicit no-op
-		System.out.println("Running");
 	}
 
 }