Revert of [simd.js] Update to spec version 0.8.2. (patchset #11 id:200001 of https...

Revert of [simd.js] Update to spec version 0.8.2. (patchset #11 id:200001 of https://codereview.chromium.org/1294513004/ )

Reason for revert:
Fails tests:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20deadcode/builds/5073/steps/steps/logs/stdio

Original issue's description:
> [simd.js] Update to spec version 0.8.2.
>
> Adds Uint32x4, Uint16x8, and Uint8x16 types.
> Adds all functions in the current spec, except for loads and stores.
>
> LOG=Y
> BUG=v8:4124
>
> Committed: https://crrev.com/4be6d37fd1ad0a6e0ea37da8863ae5169c2b89ba
> Cr-Commit-Position: refs/heads/master@{#30322}

TBR=littledan@chromium.org,bbudge@google.com,bmeurer@chromium.org,hpayer@chromium.org,bbudge@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124

Review URL: https://codereview.chromium.org/1309513005

Cr-Commit-Position: refs/heads/master@{#30323}