Revert "[autotest] Always use tko tables on master from shards."

This reverts commit e2bf396b7d3870f7565b2b10018087ab7fa6256e.

BUG=422637
CQ-DEPEND=CL:223065

Change-Id: I0513889a3acfc3a189843e79030da9bbd551999d
Reviewed-on: https://chromium-review.googlesource.com/223072
Reviewed-by: Fang Deng <fdeng@chromium.org>
Commit-Queue: Jakob Jülich <jakobjuelich@chromium.org>
Tested-by: Jakob Jülich <jakobjuelich@chromium.org>
9 files changed