[aur-general] Delete proposal: asus-screen-brightness

https://aur.archlinux.org/packages/asus-screen-brightness/ - The entirety code is stored in the source package - It's just a bash file and a system service file (which is not useful) - xorg-xbacklight provides the same functionality without requiring root. That said it's referenced in the wiki as an alternative to xorg-xbacklight which I... don't quite get. J. Leclanche