Delete obsolete copies

These have been moved to the infra repo

BUG=None
TEST=CQ

Cq-Depend: chromium:6941429
Change-Id: Ib902bfb0c0ef80993b2537a5fc96a72e21706f2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6938783
Commit-Queue: Jeremy Bettis <[email protected]>
Tested-by: Jeremy Bettis <[email protected]>
Reviewed-by: Jason Kusuma <[email protected]>
21 files changed