Drop ember-qunit from deps (for generator tests).

Author: chriskrycho

package.json

@@ -68,7 +68,6 @@
     "ember-cli-htmlbars": "^2.0.1",
     "ember-cli-htmlbars-inline-precompile": "^1.0.0",
     "ember-cli-inject-live-reload": "^1.4.1",
-    "ember-cli-qunit": "^4.3.0",
     "ember-cli-release": "^0.2.9",
     "ember-cli-shims": "^1.2.0",
     "ember-cli-sri": "^2.1.0",