I've run into what appears to be an odd problem attempting to delete a Label from within a script I'm modifying.  I'm not certain what editor version the script was originally created in, but it's been modified by many hands (and one assumes editors) over the past 2 yrs.

I was performing some cleanup, removing unused variables and script logic.  When I selected a particular unused label I noticed I had no option to cut, copy, or delete.  I then opened the customizer for the label and changed it's name.  After clicking "Apply", I noticed that two copies of the label appeared directly beneath the first entry, none of which can be deleted.  I closed the script without saving and tried once more, this time modifying the annotation and encountered the same result.

I'm hoping someone has seen this before and can give me a sanity check and/or a way to get rid of the label.