I have 2 server names showing up and want to remove one

I had plex running off my laptop via a portable hard drive named Aold. I build a new server on an MSI box with a new name AngPlex. I now would like to remove the old server named Aold. How do I do that?

In the web client, click on settings and then look at the devices. Delete the old server in there.

So just deleting the name does the trick. Seemed to simple. Thank you!