[PRQ#69094] Deletion Request for sage-numerical-backends-gurobi

MarsSeed [1] filed a deletion request for sage-numerical-backends- gurobi [2]: Fails to build with cython 3.x. Abandoned, unused package from 2021. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/sage-numerical-backends-gurobi/