title: Service Fabric: removed actors and now upgrade fails
body: <p>I'm trying to upgrade a Service Fabric application with a mix of stateful and stateless actors. I did some refactoring and so removed some actors I didn't need any more. Now, when I try to upgrade the application, I get the following error: </p>
  
  <blockquote>
    <p>Services must be explicitly deleted before removing their Service Types.</p>
  </blockquote>
  
  <p>After thinking about it a little bit, I <em>think</em> I understand the trouble that could come from removed services and upgrades, but then what's the correct way to do this?</p>