Remove stats that depend on GS Pre-CQ metadata.

Pre-CQ metadata is now stored in CIDB instead of GS so there is no need
to fetch data from GS anymore. In fact, the data isn't present in GS
anymore so trying to fetch the data from GS is doomed to fail.

BUG=chromium:431364
TEST=Run it and unit tests.

Change-Id: Ie98bf29a6ca54015dadf17d9e89456e2d06d619e
Reviewed-on: https://chromium-review.googlesource.com/238541
Reviewed-by: David James <davidjames@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
Tested-by: David James <davidjames@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
3 files changed