MarsSeed [1] filed a deletion request for thunar-gtk2 [2]: Broken, unneeded, unbuildable gtk2 version of repo's thunar. Legacy dependencies are not met (e.g. would need the nonexistent exo-1 / libexo-1.so).
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/thunar-gtk2/