Actually, I just found it in another thread. I was searching for "delete column" but I switched to "delete field" and found thread705-298511:
TrojanRabbit (Programmer) Jun 21, 2002
Delete a field from a table or a field control from a form? To delete it from a table, use the following:
CurrentDb.TableDefs(<tablename or index>).Fields.Delete <fieldname>
I don't think you can delete form controls in VBA.
Thanks!