This cleans .config from unused UDK_VERSION's symbol. Change-Id: I2a17db711f615d388dbd964f67ff2cc7875c54fb Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34536 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>