Need a delete X to remove a relationship when you realize that isn't the one you want

Right now when I go to create a relationship I can't change my mind and re-do it without refreshing the page. I can't select a different relationship type or remove the one i originally chose. Refreshing works but is inefficient. It takes more time and it's not immediately obvious that that is what you're supposed to do.

An X to remove it so the dropdown can provide the options again would be better.