This reverts commit dddd2c69.

Reason for revert: The breakage seemed unrelated (it wasn't fixed on revert).

Original change's description:
> Revert "[WASM SIMD] Store simd lowering compare ops result as -1 instead of 1"
> 
> This reverts commit 2f83ffa9.
> 
> Reason for revert: Bots failed after this landed. Need to figure out if it is related.
> 
> Original change's description:
> > [WASM SIMD] Store simd lowering compare ops result as -1 instead of 1
> > 
> > BUG: v8:6020
> > Change-Id: I3148511233ee6f89acd71644e0c43f72ccc5eef0
> > Reviewed-on: https://chromium-review.googlesource.com/538160
> > Reviewed-by: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> > Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#46071}
> 
> TBR=bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,aseemgarg@chromium.org
> 
> Change-Id: I300eadd02ab2d20817461e6f9a2c23c138b42256
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/541717
> Reviewed-by: Aseem Garg <aseemgarg@chromium.org>
> Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46072}

TBR=bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,aseemgarg@chromium.org

Change-Id: I83021de8db76c27ea8d0570509713ef5c4560418
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/541719Reviewed-by: Aseem Garg <aseemgarg@chromium.org>
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46073}