How can I remove the alert box warning?

I tried removing a specific warning (for Clear Form) as indicated on this article:

https://www.jotform.com/answers/1171331-How-to-remove-form-warnings-

However, it didn't work.  Now I just get a blank warning popup.  Is it possible to remove a particular warning?

Unfortunately, we cannot disable the alert boxes. You see in the alert box is what written in the form warning settings. My colleague changed the color of the pop-up warning. But the "Clear form" warning is an alert box. We cannot remove or customize it.

Ok, thanks.