spec: teacher_speed_grader_spec hanging spec reorder

Change-Id: I1e887fc5afc6bde3ffc9a9e42e0fa2b67d985697
Reviewed-on: https://gerrit.instructure.com/36635
Reviewed-by: Bryan Madsen <bryan@instructure.com>
Product-Review: Bryan Madsen <bryan@instructure.com>
QA-Review: Bryan Madsen <bryan@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>