This reverts commit 44380f80.

Reason for revert: Breaks tsan, msan and ubsan, e.g. https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/30187

Original change's description:
> Fix SEGMAP_ERR by rolling ICU?
> 
> Fix Intl.ListFormat long strings cause SEGMAP_ERR
> Add slow regression test.
> 
> Bug: chromium:1044570
> Change-Id: I20e3523832ac3c69e88c11bd530122bbe782ad01
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2032712
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66140}

TBR=machenbach@chromium.org,ftang@chromium.org,syg@chromium.org

Change-Id: I079a675b754b413398d327c44bfeded9c7406333
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1044570
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2039355Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66141}