Revert of Turn on NVPR 4x MSAA by default when supported in DM and nanobench.

Revert of Turn on NVPR 4x MSAA by default when supported in DM and nanobench. (patchset #2 id:20001 of https://codereview.chromium.org/704563003/)

Reason for revert:
Timing out on nvpr when drawing conics. Fix will take some thought so reverting for now.

Original issue's description:
> Turn on NVPR 4x MSAA by default when supported in DM and nanobench.
> 
> This brings DM and nanobench's default configs in line with GM's.
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/31f88675718966bbb7f09718b40de10c7e214739

TBR=bsalomon@google.com,mtklein@google.com,mtklein@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/d5cd4ee5b81b51e43be7ed13f3c0f0f6c1b3fe14

[egdaniel, 2014-11-05 22:20:18]

Created Revert of Turn on NVPR 4x MSAA by default when supported in DM and
nanobench.

[commit-bot: I haz the power, 2014-11-05 22:21:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/693933004/1

[commit-bot: I haz the power, 2014-11-05 22:21:38]

Committed patchset #1 (id:1) as d5cd4ee5b81b51e43be7ed13f3c0f0f6c1b3fe14

[mtklein, 2014-11-06 16:06:12]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/685923003/ by mtklein@google.com.

The reason for reverting is: Try again with loops overflow fix landed..