[aur-requests] [PRQ#32449] Deletion Request for icu48

MarsSeed [1] filed a deletion request for icu48 [2]: Does not work, unneeded, abandoned in 2015. Can be safely deleted. Its sole consumer in AUR is wkhtmltopdf-static, which can also be deleted (request submitted), as that one has been added to Arch/community repo in 2020. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/icu48/