oech3 [1] filed a request to merge pcsx2-stable [2] into pcsx2 [3]: Duplicated. Package from stable release does not needs -stable.
[1] https://aur.archlinux.org/account/oech3/ [2] https://aur.archlinux.org/pkgbase/pcsx2-stable/ [3] https://aur.archlinux.org/pkgbase/pcsx2/