Revert of Add network throttling as an enterprise policy

Revert of Add network throttling as an enterprise policy (patchset #17 id:320001 of https://codereview.chromium.org/2364703002/ )

Reason for revert:
Reverting because this broke CrOS ASan bots:

First breaking build:

https://build.chromium.org/p/chromium.memory/builders/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%281%29/builds/17281

Thanks!

Original issue's description:
> Add support for an enterprise policy that lets the admin
> turn on network throttling, and specify the upload and download rates in kbps to throttle to.
> 
> BUG=642811
> TEST=(1) Unit-tests
> (2) Added network throttling policy to YAPS server,
> enabled throttling with various values, disabled,
> and checked that changes propagate to client device.
> 
> Signed-off-by: Kirtika Ruchandani <kirtika@google.com>;
> Committed: https://crrev.com/7db3c2b899d448dc0235e03a248df83aa5778ebf
> Cr-Commit-Position: refs/heads/master@{#428565}

TBR=bartfab@chromium.org,stevenjb@chromium.org,kirtika@google.com,michaelpg@chromium.org,mnissler@chromium.org,atwilson@chromium.org,gab@chromium.org,brettw@chromium.org,isherman@chromium.org,asvitkine@chromium.org,thestig@chromium.org,kirtika@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=642811

[tommycli, 2016-10-31 15:20:05]

The CQ bit was checked by tommycli@chromium.org

[tommycli, 2016-10-31 15:20:06]

Created Revert of Add network throttling as an enterprise policy

[commit-bot: I haz the power, 2016-10-31 15:20:30]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-31 15:22:48]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-31 15:22:50]

Try jobs failed on following builders:
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)