I have a Creator app in production. I am using Sandbox to make modifications. There are a number of fields which I have identified as obsolete (which do not contain data in production). I would like to remove them from a form but I get a message saying that the fields cannot be deleted while in Sandbox. How do I go about deleting fields which are no longer necessary? I can hide them so that only Admins see them but that is very messy. There must be a better way.

Thanks.