Revert "use trusty beta environment to get phantomJS 2.0"
Revert "use trusty beta environment to get phantomJS 2.0"

This reverts commit 8011a0484f483cad26d7c2a1c5ba2774a24d0488.

nickiaconis/data,nickiaconis/data,nickiaconis/data,workmanw/data,ryanpatrickcook/data,vikram7/data,ryanpatrickcook/data,courajs/data,davidpett/data,vikram7/data,tarzan/data,danmcclain/data,swarmbox/data,HeroicEric/data,danmcclain/data,Eric-Guo/data,tarzan/data,rtablada/data,Turbo87/ember-data,arenoir/data,davidpett/data,swarmbox/data,rtablada/data,ryanpatrickcook/data,wecc/data,arenoir/data,swarmbox/data,Eric-Guo/data,courajs/data,wecc/data,tarzan/data,rtablada/data,ryanpatrickcook/data,arenoir/data,Turbo87/ember-data,Eric-Guo/data,danmcclain/data,vikram7/data,wecc/data,swarmbox/data,rtablada/data,davidpett/data,HeroicEric/data,davidpett/data,wecc/data,workmanw/data,courajs/data,HeroicEric/data,HeroicEric/data,arenoir/data,vikram7/data,danmcclain/data,courajs/data,Turbo87/ember-data,nickiaconis/data,Eric-Guo/data,workmanw/data,Turbo87/ember-data,workmanw/data,tarzan/data