title: Locate and remove "hidden" swing components place in Netbeans editor
body: <p>I have managed to collect quite a few <code>Swing</code> components on my <code>JFrame</code> that I placed with the editor but "removed" though they still appear in the generated code. </p>
  
  <p><a href="https://i.stack.imgur.com/fEiTw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fEiTw.png" alt="enter image description here"></a></p>
  
  <p>Though I cannot for the life of me figure out how to remove them, from the designer I cannot select any of these components</p>
  
  <p><a href="https://i.stack.imgur.com/K8gRq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/K8gRq.png" alt="enter image description here"></a></p>
  
  <p>Is there a way to remove these?</p>