Remove remaining unused collections stuff

cameron removed most of the controller/model stuff in:
3c434e8aff6edf4be9de0fc362cfd7da9554354d

but this removes the remaining view/coffeescript/stuff

Test plan:
  canvas should still work
  (sorry, this looks big but none of it was ever actually loaded)

Change-Id: Ie4e31fcdf5bc2820c9eafaef6e8b25332aaea4bc
Reviewed-on: https://gerrit.instructure.com/37508
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Simon Williams <simon@instructure.com>
Product-Review: Ryan Shaw <ryan@instructure.com>
QA-Review: Ryan Shaw <ryan@instructure.com>