test_platform: Drop unused fields

BUG=chromium:1127202
TEST=./generate.sh

Change-Id: Ia1f120a36ad99f61e5cd0f82223aab8cf15fc6ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2547570
Auto-Submit: Prathmesh Prabhu <pprabhu@google.com>
Commit-Queue: Jared Loucks <jaredloucks@google.com>
Reviewed-by: Jared Loucks <jaredloucks@google.com>
8 files changed