projects: delete chameleon

Moved to chromiumos/platform/chamelon already.

BUG=b:177003034
TEST=CQ

Change-Id: I8487ea91beaa77644048eb635e1d9817256253e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/zephyr-chrome/+/2634348
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Auto-Submit: Jack Rosenthal <jrosenth@chromium.org>
Commit-Queue: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
40 files changed