This reverts commit 41ba3d3e.

Reason for revert: Speculative revert:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Fuzzer/27370
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20predictable/19895

Original change's description:
> [builtins] Implement Array.prototype.slice in Torque
> 
> In the process:
> 
> - add volatile types for FastJSArray and remove the length_fast accessor
>   from JSArray with the application of more rigorous typing.
> - add micro benchmarks for testing all the interesting slice cases
> 
> Also update a few assorted places in .tq code to make them more
> idiomatic.
> 
> Change-Id: I76ec2bb25b65a869180af1f7288419dc1f0a9c37
> Reviewed-on: https://chromium-review.googlesource.com/c/1281603
> Commit-Queue: Daniel Clifford <danno@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56806}

TBR=danno@chromium.org,jgruber@chromium.org,tebbi@chromium.org

Change-Id: I1f2c82b4c3ab0848857f620facacf9604d4fcd11
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1290973Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56815}