Remove SimpleTest.expectAssertions() call now that bug 846137 is fixed.  No review.
Bug 868751:  Remove support for obsolete document.createEvent("AnimationEvent"), document.createEvent("TransitionEvent"), AnimationEvent.initAnimationEvent, and TransitionEvent.initTransitionEvent.  r=smaug
Bug 870056 - Enable robocop testClearPrivateData; r=jmaher