Revert of [telemetry] Tenatively re-enable IPPET.

Revert of [telemetry] Tenatively re-enable IPPET. (patchset #1 of https://codereview.chromium.org/510143003/)

Reason for revert:
Reverting since it says to feel free ;)

Original issue's description:
> [telemetry] Tenatively re-enable IPPET.
> 
> We want to see if it continues to cause flake and noise on the bots. If so, feel free to revert.
> 
> 
> BUG=336558
> TEST=None.
> R=tonyg
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/fad20c0b56b7b1f223cd79fa3a147cbeb5a21575

TBR=tonyg@chromium.org,dtu@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=336558

[epennerAtGoogle, 2014-08-28 01:35:50]

Created Revert of [telemetry] Tenatively re-enable IPPET.

[commit-bot: I haz the power, 2014-08-28 01:37:08]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/epenner@google.com/514063002/1

[commit-bot: I haz the power, 2014-08-28 01:38:03]

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

[commit-bot: I haz the power, 2014-08-28 01:38:04]

Failed to commit the patch.

[dtu, 2014-08-28 05:09:59]

Which bots failed? I didn't see any failures on Windows 8, so I'm going to
disable this on windows 7 (it's not enabled on XP).

[epennerAtGoogle, 2014-08-28 18:43:15]

Should have posted some examples, but yeah it was Win7 from what I recall. Looks
like you got it right.

[epennerAtGoogle, 2014-08-28 19:29:57]

On 2014/08/28 18:43:15, epennerAtGoogle wrote:
> Should have posted some examples, but yeah it was Win7 from what I recall.
Looks
> like you got it right.

Actually I'm seeing some on Win8 now too:
http://build.chromium.org/p/chromium.perf/builders/Win%208%20Perf%20%282%29/b...