Revert of [test] Skip failing test after clang roll. (patchset #1 id:1 of https://codereview.chromium.org/1955013002/ )

Reason for revert:
Clang roll with fix is in.

Original issue's description:
> [test] Skip failing test after clang roll.
>
> BUG=v8:4995
> LOG=n
> NOTRY=true
> TBR=thakis@chromium.org, titzer@chromium.org
>
> Committed: https://crrev.com/6e6a7ea3a425bee65d856814bd361ddbf14811f5
> Cr-Commit-Position: refs/heads/master@{#36064}

TBR=thakis@chromium.org,titzer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4995
NOTRY=true
LOG=n

Review-Url: https://codereview.chromium.org/1960053002
Cr-Commit-Position: refs/heads/master@{#36119}