Delete a bunch of legacy code that is no longer used.

High-level
1) Remove test_scheduler.py (scheduler before suite_scheduler)
2) Remove chromeos_test -- a bunch of related library code from
the Kirkland team that we've replaced.
3) Remove the old autotest dashboard code.
4) Old admin/deployment code.

BUG=None
TEST=Moblab test

Change-Id: I49213b98f33b2d04e026e9e532ef99f1d6ca65aa
Reviewed-on: https://chromium-review.googlesource.com/274426
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Chris Sosa <sosa@chromium.org>
57 files changed