In Kontakt I only see a way to Hide libraries but not remove.
I have deleted the library folder and it still shows up in Kontakt and under Installed in Native Access.
Some libraries I just don't like enough to use and don't want to take up the space. 
Just trying to clean house a little and finding no help from the NI apps or in my searches.  Why don't they have a Remove/Uninstall button for each item in Native Access?
Is NI saying "How dare you remove our content.  You're on your own."
[SOLVED...partially]