How to delete an array column

How do I delete an array column that I set up in the Data Editor. The original array I made in the Google Sheet. Thought deleting those columns would remove the array in the Data Editor. That didn’t work so I made another array in the Data Editor. Now I want to delete both of them and use a 3rd one that I got set up the way I want but I can’t see how to remove the unwanted array columns, only option is to “make owner”

Ok, I figured it out. I closed the Google Sheet and reopened and some time later the array columns made in the Data Editor appeared in the Google Sheet. Delete those and then the array columns went away in the Data Editor— I guess it was an issue of either needing to refresh the Google Sheet or a long time delay in the system.

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