Drop peach which has hit AUE (auto-update end)

This board hit AUE in M75 so can be removed.

BUG=chromium:990438
TEST=emerge-sarien sys-apps/mosys

Change-Id: If17b606ea8dcaac16495de4954ed0d761fec1dfb
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/1746497
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@google.com>
9 files changed