abuild used to allow boards to override certain environment
variables using a file called abuild.info.
This isn't used, this isn't needed. Drop it.
Change-Id: Ic93748f602bf0c354ff1f3be25a050e1cb469256
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1027
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>