Revert of Suppress UNINITIALIZED READ in blink platform test (patchset #1 id:1 of https://codereview.chromium.org/1940663002/ )

Reason for revert:
Removing the suppression to determine if this is still a
problem. I'm unable to reproduce the error locally.
http://chromium-build-logs.appspot.com/suppression_query
also suggests this suppression is no longer needed.

Original issue's description:
> Suppress UNINITIALIZED READ in blink platform test
>
> BUG=608111
> TBR=kulshin@chromium.org,
>
> Committed: https://crrev.com/93ac305579eaa690f7233542523f2eaa6f1fb8a8
> Cr-Commit-Position: refs/heads/master@{#390822}

# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=608111

Review-Url: https://codereview.chromium.org/2002323002
Cr-Commit-Position: refs/heads/master@{#395975}
1 file changed