Revert of Re-enable SSE4. (https://codereview.chromium.org/357593003/)

Reason for revert:
Mac Chrome builders still failing.

Original issue's description:
> Re-enable SSE4.
>
> I will roll this into Chrome with https://codereview.chromium.org/332393003.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/a75b0fadbdec4214afec6dd727fd224d34ed164f

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

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/337093004
1 file changed