@User, I have implemented a command to select (Shift-Delete) all nets/labels "physically" attached to selected nets/labels. After the Shift-Delete a Delete command deletes all the selection. Splitting this into 2 steps allows better control, you see what is going to be deleted, you can also add (shift-click) or delete (Alt-click) some items before doing the deletion. You an also do other things, like copy/move the selection. Probe elements attached to the nets will also be selected (and thus deleted after Delete command) since they will remain floating otherwise.