vc_screen: prune macros

Do not undefine random words. I guess this was here as there were macros
with such generic names somewhere. I very doubt they still exist. So
drop these.

And remove a spare blank line.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200818085706.12163-16-jslaby@suse.cz


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>