Revert "crossystem: Add board_id property"

This reverts commit db1b34f559fdbf5584b57007da43e4dddda43c6a.

Reason for revert: seems to break scarlet - b/259702907

Original change's description:
> crossystem: Add board_id property
>
> futility is one of a few places in ChromeOS that uses "mosys platform
> version".  The goal is to remove this command from mosys.
>
> This commit adds a new property to crossystem, "board_id", which
> reads the board revision from SMBIOS/FDT, and replaces the call in
> futility with the appropriate VbGetSystemPropertyInt.
>
> BUG=b:187790074
> BRANCH=none
> TEST="crossystem board_id" on hana and brya
>
> Change-Id: Id69c8e309c0e509a165aa6da2778573ac7de3455
> Signed-off-by: Jack Rosenthal <[email protected]>
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/4029537
> Reviewed-by: Julius Werner <[email protected]>

Bug: b:187790074, b:259702907
Change-Id: Ibdc2525d6f395e2ef63354d36ca02b71543e8079
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/4038443
Commit-Queue: Jack Rosenthal <[email protected]>
Tested-by: Jack Rosenthal <[email protected]>
Commit-Queue: Brian Norris <[email protected]>
Reviewed-by: Jack Rosenthal <[email protected]>
Owners-Override: Jack Rosenthal <[email protected]>
4 files changed