Revert of Paranoid temporary check that Chrome's building with SSE2 on all Windows builders. (patchset #1 id:1 of https://codereview.chromium.org/1283183004/ )

Reason for revert:
Nothing broke.  Experiment is over... SSE2 is present.

Original issue's description:
> Paranoid temporary check that Chrome's building with SSE2 on all Windows builders.
>
> BUG=chromium:475596
>
> Committed: https://skia.googlesource.com/skia/+/e8445307ac33eddcf04457ae21040e47dc9c2a97

TBR=egdaniel@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:475596

Review URL: https://codereview.chromium.org/1296593002