Revert of Enable the SSSE3 compile time check on all platforms. (https://codereview...

Revert of Enable the SSSE3 compile time check on all platforms. (https://codereview.chromium.org/403583002/)

Reason for revert:
This is blocking the roll. Chromium Windows trybots (like win_chromium_x64_rel) are crashing in the SSSE3 code (for example SkCanvasVideoRenderTest.CroppedFrame).

Original issue's description:
> Enable the SSSE3 compile time check on all platforms (3rd attempt)
>
> BUG=skia:2746
>
> Committed: https://skia.googlesource.com/skia/+/933834851f9d48fbd85b728cc92e1f0134bfaa4e

R=halcanary@google.com, mtklein@google.com, djsollen@google.com
TBR=djsollen@google.com, halcanary@google.com, mtklein@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:2746

Author: bungeman@google.com

Review URL: https://codereview.chromium.org/418523002