Remove image-fetch-fail.svg timeout expectation
Remove image-fetch-fail.svg timeout expectation

The test is no longer timing out on Win:
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20Blink&tests=http%2Ftests%2Fsvg%2Fimage-fetch-fail.svg

BUG=368560
TBR=falken@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1188143002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@197187 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk