[PRQ#51043] Deletion Request for icu52

MarsSeed [1] filed a deletion request for icu52 [2]: Safe to drop this unbuildable legacy icu pkg, along with its defunct consumers from 2015, pending deletion: - quasar-client (PRQ#50635) - quasar-single (PRQ#50637) [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/icu52/