Removing unused fields on a form

Hi all!

I have a intake form for my department and we recently edited some of the selections to make it more concise. The issue I am having now is we have a lot of unused fields that I would like to delete completely so they don't clog everything on the remaining form and data sheets. I can remove them from the form but not from the "option column". Pic attached and "option column" circled in pink. Thank you in advance for any advice!!

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