[autotest] Don't use db query timeout in django settings.

CL:221018 introduced taking over django's database settings for
tko/db.py. Unfortunately timeouts have different meanings for
tko/db.py and django. While they are a maximum query runtime for
the first, they are a cache invalidation timeout for the latter.

This fixes this.

BUG=None
DEPLOY=tko,apache
TEST=Ran suites, tried syncdb, tried restarting afe.

Change-Id: I6b7b805da030d323ac96683b66d04ca446902965
Reviewed-on: https://chromium-review.googlesource.com/222042
Reviewed-by: Prashanth B <beeps@chromium.org>
Commit-Queue: Jakob Jülich <jakobjuelich@chromium.org>
Tested-by: Jakob Jülich <jakobjuelich@chromium.org>
2 files changed