Overview: I had an external library scan the wrong directory and it imported a ton of assets, created thumbs, etc. What's the best way to remove these files?
Background: I have two external libraries with RO mounted directories from my NAS. External Library 1 scans /nas/folder_one and External Library 2 scans /nas/folder_two. However, I inadvertently had External Library 2 scan and index /nas/, so now that Library has a ton of extra assets in it. I changed the mounting path, so all the extra assets have been removed from my timeline, but the Library folder in the filesystem is still quite large. How can I clean that up?