chore(package.json): remove dependencies which are no longer required

Based on
https://github.com/angular/angular.js/issues/3244#issuecomment-41003086, I
don't believe we actually use either of these now that dgeni has replaced the
old docs app. These should be removed if Travis is green.

The i18n scripts still rely on q, so unfortunately it can't be gotten rid of
just yet.