vboot: remove definition of VB_INIT_OUT flags
vboot: remove definition of VB_INIT_OUT flags

These flags are no longer used.

BUG=b:124141368, chromium:960226
TEST=make clean && make runtests
BRANCH=none

Change-Id: I0964ea834a190358ae10289c2746304369a79ff8
Cq-Depend: chromium:1957764
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1957725
Reviewed-by: Julius Werner <4d12f06cff3725783b352157673a720bc67c4afe@chromium.org>
Reviewed-by: Yu-Ping Wu <e17b963d2ce5bddd1fecae25c320252b132e804d@chromium.org>
Commit-Queue: Joel Kitching <c2feea8c1334a0d339e816ae4c7c9ecfa9b30a91@chromium.org>
Tested-by: Joel Kitching <c2feea8c1334a0d339e816ae4c7c9ecfa9b30a91@chromium.org>

coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot