How to list duplicate nodes, with views, based on compared fields with links
There isn't an easy, non-coder based way to do that with views. You could however create a view with the link field visible, and as a sort parameter as well. That way identical field values would show up next to one another. It'd be then the process of selecting the duplicate node (I'd suggest deleting the one with the higher nid) and deleting it.

Let me know if that makes any sense at all, or if you need a 5 minute proof of concept demo.