firmware helper scripts: remove obsolete scripts

Delete obsolete scripts that have no path to graduate from the proving
ground.

BUG=none
TEST=none

Change-Id: I20af60b4c17a93d840e0967507a44eab3c64cc70
Reviewed-on: https://chromium-review.googlesource.com/1388859
Commit-Ready: Kevin Shelton <kmshelton@chromium.org>
Tested-by: Kevin Shelton <kmshelton@chromium.org>
Reviewed-by: Dana Goyette <dgoyette@chromium.org>
5 files changed