MarsSeed [1] filed a deletion request for bison2 [2]: I believe this should not be needed anymore.
Bison version 2.x, last of this line was released in 2013. Arch repos carry the current (3.x) line. Nothing depends on it so it's safe to remove from AUR. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/bison2/
