This reverts commit 3ca32e98.

Reason for revert: Breaks waterfall (V8 fuzzer)

Original change's description:
> [regexp] Introduce species constructor protector for regexps.
> 
> Bug: v8:8445
> Change-Id: Iea69c65d0054b24b3f8c7234c4c556ebee2dd45f
> Reviewed-on: https://chromium-review.googlesource.com/c/1335696
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57564}

TBR=ulan@chromium.org,jarin@chromium.org,jgruber@chromium.org

Change-Id: I8f926abdd129d9868f2c9c5dbb29096c08bd1ff7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8445
Reviewed-on: https://chromium-review.googlesource.com/c/1340239Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57571}