If you run that command now, it doesn’t do anything because the script it tries to download doesn’t exist anymore.
If you ran it when the script still existed, the only way to “uninstall” it is to know what the script did. And we can’t know without the file.
Vesktop works fine for me. I started using it because I’m using wayland, and at the time it was the client I found that allowed screensharing. The high-quality screensharing was a nice plus :)