chaos: force host times instead of tlsdate restart

The wifi cell tests force a common time reference onto dut, capturer and
AP for ease of log and trace reading.  Do the same in chaos instead of
restarting tlsdated and hoping.

Also removes un-used tlsdated code.

BUG=chromium:232002
TEST=run chaos

Change-Id: I7502577233f2017524a861813fbe0f32b85ff585
Signed-off-by: Jason Abele <jabele@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170531
Reviewed-by: Christopher Wiley <wiley@chromium.org>
3 files changed