This reverts commit 1076d79f.

The only workable xvt is xterm, since only works with it:

  xinit cmd

See commit: 2451a17c

Requested by Ivan A. Melnikov <iv@altlinux.org>

Use a prebuilt grub image for EFI, creating BOOT/EFI/grub.cfg

See ALT bug 31971

All drm modules are added to the first and second stages, except
for nouveau and nvidia. Nouveau is added to stage2. nvidia needs
to be added to live and the base system separately. This is an
auxiliary target.

See also https://bugzilla.altlinux.org/31971