[JENKINS-49987] Cleanup anonymous class usages for Remoting in Jenkins Core, Remoting and Modules #1312

After adding extra diagnostics for cases like JENKINS-49795, there will be warning reports about anonymous classes being serialized over Remoting. Somebody needs to cleanup these usages.

Examples:


	
https://github.com/jenkinsci/jenkins/search?utf8=%E2%9C%93&q=%22new+MasterToSlaveCallable%22&type=
	

  

    

      remoting/src/main/java/hudson/remoting/forward/PortForwarder.java
    
    

         Line 135
      in
      9b8fd56
    
  
  

    


        

          

          
 return ch.call(new Callable<ListeningPort,IOException>() { 
        
    
  


	
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