remove ADDITIONAL_DRIVERS support

drivers should go upstream (linux kernel)
libmicrohttpd: dont depend on libgcrypt

https is disabled, anyway
systemd: meh libgcrypt

it is optional. but it is not optional. is it?
remove BLURAY_SUPPORT
remove package: libbluray
remove package: libaacs
remove package: libgcrypt
remove package: libgpg-error