Remove stray commented out line.

The bug just says the test needs a new expectation, which it clearly
got at some point since it's passing.

TBR=dpranke@chromium.org

Review URL: https://codereview.chromium.org/22101002

git-svn-id: svn://svn.chromium.org/blink/trunk@155489 bbb929c8-8fbe-4397-9dbb-9b2b20218538