Hi Michael,
Apologies for having missed your question. I hope you found the answer you were looking for. If you haven't, please navigate to Admin -> Asset Types and Edit the asset type where you have the custom field. Clicking on the field will give you a pop-up which has the Delete option. Let us know if you have any questions.
Best,
Sid
Michael Shane Stoelting
Is it possible to remove/delete custom fields that were created for an Asset Type? If so, I have been unable to find any existing "How To's" on how to remove a custom field for an Asset type