The "ALL" selection caused issues with our custom forms

There are ways to construct custom forms so that they do not have an All.  You would need a system admin to edit the custom forms.  Whoever built the custom form specifically created All as a reponse, the corrective action would be to edit the field in the custom form to remove the All answer.

I am one of the Syst  Admins on this and there is no way to remove the "ALL" from the form. 

Is that screenshot from the form Preview? I already know the answer to that, btw.

In Preview, the "All" doesn't show but when the form is viewed on an object, it does.

There are many "ideas" that have been submitted to remove this or at least offer a choice to turn it off over the years. Since ideas are not consolidated on AEL but scattered all over the place, there's no way for the PMs to know that this request has gotten a lot of traction.

@jon_chen Can you search and consolidate these "ideas"?

This seems to be limited to options with checkboxes, is it possible to construct a similar field using radio buttons or another available option which does not contain the All 

Single choice fields don't have the "All". Multiple choice does.

Sorry, my phrasing - I know this is possible within Workfront my question was to the original poster - is it possible to get their specific environment configured in such a way.

My first idea would be to break out the question, instead of it being one field it could be many.

Radio button - Is your project (A) - yes / no - if yes provide details

Radio button - Is your project (B) - yes / no - if yes provide details

This would allow for granularity but it would remove the All option