The old means of enabling the graphical service is obsolete so remove it.
It's now detected by explicitly enabling graphical.target so do this by default
for all graphical UXes
The DNF-based appliance-tools build of the ARM image complains
that it is short by 54MB, so we're increasing by a bit more than that
to give some wiggle room for the future.
remove vfat kickstarts, we are going to use u-boot in raw space
without needing two sets of images with different partitioning we
can remove the seperate partitioning snippets and put the
partitioning in base.
