vboot: deprecate and remove legacy UI code

BUG=b:146399181, b:167643628
TEST=make clean && make runtests
TEST=Build and flash to device
BRANCH=none

Cq-Depend: chromium:2512739
Signed-off-by: Joel Kitching <kitching@google.com>
Change-Id: Ia8d95451d55142fbe9acaa6e49de9b5abe134083
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2512740
Reviewed-by: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
21 files changed