[PRQ#49716] Deletion Request for fftw-amd

MarsSeed [1] filed a deletion request for fftw-amd [2]: Abandoned, outdated variant/duplicate from 2022-05 of repo's newer fftw. As per comments, this PKGBUILD doesn't work after a version bump. Seems better to delete. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/fftw-amd/