crossystem: drop support for Android
crossystem: drop support for Android

This was for the Ryu project, which was cancelled (at least for
CrOS). It's safe to assume crossystem will never be used on Android.

BUG=chromium:990438
BRANCH=none
TEST=crossystem still functions on samus

Change-Id: Ide5b4ad105e9f36972067c125176ae5a08444ceb
Signed-off-by: Jack Rosenthal <d3f605bef1867f59845d4ce6e4f83b8dc9e4e0ae@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1949427
Reviewed-by: Paul Fagerburg <d8c44b60afb21c60f56d931aa690ca1cf34910c8@chromium.org>

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