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This reverts commit a276a7a2.

Reason for revert: Didn't stop the flake.

Original change's description:
> Allow autospawn for pulse deamon to attempt to fix flaky tests.
> 
> Locally if I run "pactl exit" and log the start time, up to 3 seconds
> may elapse before the pa_context reaches the PA_CONTEXT_READY state. On
> my local machine, something is restarting the pulse daemon
> automatically within a few seconds. It's possible the bots are running
> in some state where the pulsedaemon will not respawn, so we end up
> hanging forever.
> 
> There's no easy way to timeout the wait for PA_CONTEXT_READY since on
> the call into pa_threaded_mainloop_wait() just hangs and there's no way
> to pump the mainloop otherwise it looks like. If we want to make the
> loop timeout, we need to switch away from wait() to a spin/sleep loop.
> 
> Lets see if this fixes the issue first, if not then we can try a timeout
> based approach.
> 
> R=​guidou
> 
> Bug: 1047655
> Change-Id: If81ef546c04aa33df8e35368102fd890016db76f
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2036901
> Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
> Commit-Queue: Guido Urdaneta <guidou@chromium.org>
> Reviewed-by: Guido Urdaneta <guidou@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#738151}

TBR=dalecurtis@chromium.org,guidou@chromium.org

Change-Id: I8695d34184abdd1eaa4e1c0d19e8e93ac7fbe9c8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1047655
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2037347Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738229}