build: remove getty@.service from makefiles

We removed this service unit earlier this week but the EXTRA_DIST variable
still mentions it. Remove it so kmscon builds cleanly again.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
build: fix build without libfont.la

We still have dead dependencies on libfont.la but don't build it anymore.
Remove the dependency as it is directly linked now.

Reported-by: Vladimir Kravets
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>