Revert of [builtins] Move StringNormalize to a cpp builtin. (patchset #10 id:180001 of https://codereview.chromium.org/2315343002/ )

Reason for revert:
Tests fail when i18n is switched off, trybots do not run this configuration

Original issue's description:
> [builtins] Move StringNormalize to a cpp builtin.
>
> BUG=v8:5364
>
> Committed: https://crrev.com/7f84a6a2e7000bebba49354b4648346ff606ca34
> Cr-Commit-Position: refs/heads/master@{#39331}

TBR=bmeurer@chromium.org,franzih@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5364

Review-Url: https://codereview.chromium.org/2335553002
Cr-Commit-Position: refs/heads/master@{#39332}