Revert of Expose SIMD.Float32x4 type to Javascript.

Revert of Expose SIMD.Float32x4 type to Javascript. (patchset #14 id:450001 of https://codereview.chromium.org/1219943002/)

Reason for revert:
Seems to brake the latest roll into Chromium: http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_compile_dbg_ng/builds/59796/steps/compile%20%28with%20patch%29/logs/stdio

Original issue's description:
> Expose SIMD.Float32x4 type to Javascript.
> This CL exposes the constructor function, defines type related
> information, and implements value type semantics.
> It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
>
> TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
>
> LOG=Y
> BUG=v8:4124
>
> Committed: https://crrev.com/e5ed3bee99807c502fa7d7a367ec401e16d3f773
> Cr-Commit-Position: refs/heads/master@{#29689}

TBR=rossberg@chromium.org,littledan@chromium.org,martyn.capewell@arm.com,bbudge@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Committed: https://crrev.com/40c38c5a5a14471e88f4e7a31660f4908bd8fdf7
Cr-Commit-Position: refs/heads/master@{#29701}

[Michael Hablich, 2015-07-16 12:35:17]

Created Revert of Expose SIMD.Float32x4 type to Javascript.

[commit-bot: I haz the power, 2015-07-16 12:35:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1241533004/1

[commit-bot: I haz the power, 2015-07-16 12:36:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-16 12:36:17]

Patchset 1 (id:??) landed as
https://crrev.com/40c38c5a5a14471e88f4e7a31660f4908bd8fdf7
Cr-Commit-Position: refs/heads/master@{#29701}