vboot: stop setting context mode flag in VBSLK

Stop setting mode flags (developer or recovery)
in VbSelectAndLoadKernel; this has already been
done in firmware verification.

BUG=b:124141368, chromium:994060
TEST=make clean && make runtests
BRANCH=none

Change-Id: I659f406e0182f809ad46c92a2597b05f685d45dd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2054265
Reviewed-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
2 files changed