[PRQ#66680] Deletion Request for usbboot

MarsSeed [1] filed a deletion request for usbboot [2]: Broken, unused VCS package from 2021. Also, despite the bogus arch=('any'), this PKGBUILD actually compiles C source into machine code, and the runtime is intended to be executed only on ARM / Aarch64 devices like the Raspberry Pi. Therefore this is not compatible with Arch Linux (x86_64). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/usbboot/