MarsSeed [1] filed a deletion request for lib32-openssl098 [2]: Only the defunct and orphaned labview-2010 depends on this legacy lib32-openssl now (deletion request for the latter submitted separately).
I'd say it's safe to delete this package as it is not needed anymore. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/lib32-openssl098/