These items are part of the Finder extension, which can stay resident in memory until Finder is restarted.
Did you see the post here about uninstallation?
It sounds like you probably got all of the locations on the filesystem, but you may want to double-check. The Finder extension is physically located in the
After ensuring the files are removed, you will want to relaunch Finder, which you can do by holding down the “option” key, right-clicking on the Finder icon in the dock, and selecting “Relaunch”.