project-lakitu: use third_party/toolbox repo

We apply changes directly on third_party/toolbox for
sharing toolbox script, and also more flexity to change
since the latest toolbox does not apply to COS any more.

BUG=b/180726013
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I3398b6375a5497c79137eaa1682eef5dd33cb999
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/28380
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Rayan Dasoriya <dasoriya@google.com>
5 files changed