How do you remove an image that has been inserted into a TV

I have a template variable with input set to Image.

Once an image has been inserted, there seems to be no way to remove it. Just thinking that the user may change there mind and not use an image.

Do I have to set up a radio selector for this?

Just empty the field.

Easier said than done. When I'm in the manager, it appears as though I only have the option to select a different image.

I see. Highlight and Delete.

I think I need to keep reminding myself that everything in the manager really is pretty simple, so when I start over complicating it, I need to stop and think: what is the simplest way to do this.