Revert of [regexp] ship unicode regexps. (patchset #1 id:1 of https://codereview.chromium.org/1689113002/ )

Reason for revert:
[Sheriff] Speculative revert for gc stress failures:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/builds/1726

Blamelists are screwed up currently...

Original issue's description:
> [regexp] ship unicode regexps.
>
> R=rossberg@chromium.org
> BUG=v8:2952
> LOG=N
>
> Committed: https://crrev.com/3a2fbc3a4ed2802b52659df2209b930200d63b29
> Cr-Commit-Position: refs/heads/master@{#33899}

TBR=rossberg@chromium.org,yangguo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:2952

Review URL: https://codereview.chromium.org/1688803005

Cr-Commit-Position: refs/heads/master@{#33902}