This reverts commit 29308cf0.

Reason for revert: Use existing runtime functions instead

Original change's description:
> Add boolean runtime checks for different element kinds.
> 
> This will be used for Array.p.sort benchmarks to ensure that the
> arrays will have the correct element kind.
> 
> R=​cbruni@chromium.org, jgruber@chromium.org
> 
> Bug: v8:7382
> Change-Id: I4fe58d97d7f18fd193d4432964cf6b4f5335e0e7
> Reviewed-on: https://chromium-review.googlesource.com/1004754
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52511}

TBR=cbruni@chromium.org,jgruber@chromium.org,szuend@google.com

Change-Id: I45742879d3637470752335772f294d7e8ff3ce35
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7382
Reviewed-on: https://chromium-review.googlesource.com/1004589Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52513}