Problem Solved! - help with orphaned shared library?

I previously had a NAS drive that had contained a shared itunes library. I have since decommissioned the drive. However, in itunes the shared library still shows up even though it is unusable. I can make the shared library disappear from itunes by going to preferences and indicating that I do not what to see shared libraries but that hides all shared libraries. How do I get the orphaned library permanently removed from itunes?

Thanks in advance
Cowboy59

It turns out that NAS drive I previously used did a poor job of deleting files. While the Windows O/S shows the directories as empty, an itunes library still exixts on the drive. Powering off the drive removed the shared library.