[PRQ#71204] Deletion Request for gmic-pre

HurricanePootis [1] filed a deletion request for gmic-pre [2]: This was created before `gmic` and `gimp` was updated in the main repos. These packages are no longer needed, as both GIMP 3.0 and gmic for GIMP 3.0 are out in the main repos [1] https://aur.archlinux.org/account/HurricanePootis/ [2] https://aur.archlinux.org/pkgbase/gmic-pre/