Remove TestExpectations for a test that has not crashed recently

Remove TestExpectations for a test that has not crashed recently

There have not been any crashes recorded recently:
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fsecurity%2FcontentSecurityPolicy%2Freport-only-from-header.php

There has been a timeout on WebKit Win Oilpan, so leave that alone.

BUG=282081
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181308

[philipj_slow, 2014-09-03 11:14:26]

philipj@opera.com changed reviewers:
+ mkwst@chromium.org

[philipj_slow, 2014-09-03 11:14:27]

PTAL

[Mike West, 2014-09-03 11:40:41]

The CQ bit was checked by mkwst@chromium.org

[Mike West, 2014-09-03 11:40:42]

lgtm

[commit-bot: I haz the power, 2014-09-03 11:41:01]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/philipj@opera.com/528273002/1

[commit-bot: I haz the power, 2014-09-03 11:41:28]

Committed patchset #1 (id:1) as 181308