How do I uninstall?

[RealPlatinum69]

What commands do I use to uninstall the drivers?

[BodilessSleeper]

Mostly the same commands with different flags ie. whatever you installed on Arch with sudo pacman -S ... you should now uninstall with sudo pacman -R ..., so look up the specific flags for your package manager (like sudo apt remove for Debian based distros and sudo dnf remove for Fedora) Keep in mind that uninstalling the drivers is something you probably don't wanna do unless you installed the wrong ones

[strycore]

If you used a PPA, then use ppa-purge. For example if you used the kisak PPA:

sudo apt install ppa-purge
sudo ppa-purge ppa:kisak/kisak-mesa