We'll also be able to remove bqschema and bqexport.

Nodir, while we're waiting on 791059, can I move the build and step protos somewhere else? Where would you suggest? 

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/06c9e5e1eda720110e12bc25066765767392fa90

commit 06c9e5e1eda720110e12bc25066765767392fa90
Author: Katie Thomas <katthomas@google.com>
Date: Thu Jan 11 18:54:22 2018

[bqschemaupdater] remove old test-results schema

This has been replaced already by the proto in
infra/go/src/infra/appengine/test-results/frontend/model/gen/testresults.proto

Bug:798429
Change-Id: I2cbdd5dcdaef6dbf0778ee358f284f2a0ef898d1
Reviewed-on: https://chromium-review.googlesource.com/861909
Reviewed-by: Sean McCullough <seanmccullough@chromium.org>
Commit-Queue: Katie Thomas <katthomas@google.com>

[delete] https://crrev.com/a3d7ae5cffa5aae81122d8f66450f114a26c9e3d/go/src/infra/tools/bqschemaupdater/raw_events/test_results.pb.txt

i think build and step pb txt files can be removed.
build and step protos can be removed too. I won't used them in buildbucket

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/1259b0d5b5153778a4fe2a723b0e28d4deb5fb7e

commit 1259b0d5b5153778a4fe2a723b0e28d4deb5fb7e
Author: Katie Thomas <katthomas@google.com>
Date: Fri Jan 12 01:02:23 2018

[bqschemaupdater] remove directory

These aren't compatible with the current version of bqschemaupdater.
I don't suspect we'll want to modify the schema because we're
intending on creating a new events tables for these use cases.

Bug:798429
Change-Id: I481ef7c4915c1f5508c70fd9dbef0cd6b3eead6d
Reviewed-on: https://chromium-review.googlesource.com/861922
Commit-Queue: Katie Thomas <katthomas@google.com>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>

[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/cq/events.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/raw_events/cq.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/raw_events/buildevent_completed_step_legacy.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/builds/builds.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/builds/steps.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/raw_events/buildevent_completed_build_legacy.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/cq/attempts.pb.txt
[delete] https://crrev.com/b858620ca8807834b12b4d8b6ced4d0bf91936a1/go/src/infra/tools/bqschemaupdater/aggregated/cq_attempts.pb.txt