Remove test deprecations via upgraded dependencies
Remove test deprecations via upgraded dependencies

This also removes ember-try, as this is now included in the most recent release of Ember-CLI

travis-ci/travis-web,travis-ci/travis-web,travis-ci/travis-web,travis-ci/travis-web,fotinakis/travis-web,fotinakis/travis-web,fotinakis/travis-web,fotinakis/travis-web