kbuild: trivial - remove trailing empty lines

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

Change-Id: I019ba09f7371cff2699a6c854c478fec53e51126
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/9311
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

util/kconfig/nconf.c

@@ -1554,4 +1554,3 @@ int main(int ac, char **av)
 	endwin();
 	return 0;
 }
-