Two links targeting a same project, how can I delete one?

Dear All,
I’ve recently updated the name of one of my project on Glitch, this results in having two Url links targeting the project. How can I delete the old link ?

Why is it a problem if the old link still works?

Dear Tim,
Technically it is not a problem to get the two links working. But I would like to know if it is possible to disable one of those links.

No, it’s not possible for you to do that.