MarsSeed [1] filed a deletion request for lib32-libgnome-keyring [2]: Orphaned lib32 package, last updated in 2017.
Nothing on AUR depends on it, it seems, since at least Nov 2017. Therefore it's safe to delete it. No impact. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/lib32-libgnome-keyring/