This is NOT a duplicate. The solution in How to remove all traces of KDE installed did NOT work, so please do not mark this as a duplicate (it ruined the last post I made). I am using Unity, but KDE is still available on the login screen. I have uninstalled it, and all of its programs, but it won't go away.
I did an installation of kde-full to try it, but I didn't like it and want to go back to just Unity.
Thanks in advance.
PS this installation is NOT Kubuntu.
UPDATE: KDE Plasma is still an option on the login screen, and choosing it opens a perfectly working KDE session. I have a 128GB SSD, so space is valuable.
UPDATE: KDevelop isn't that important. I don't have any custom configs, so if it gets deleted, I can reinstall it quickly.
/usr/share/xsessions/? That's where the .desktop files for various logins are stored.