revert assignment spec fix

refs CNVS-11192

Change-Id: Ifddd43917f25bd99b796ed87f7dafe22a1263ef0
Reviewed-on: https://gerrit.instructure.com/30454
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Bryan Madsen <bryan@instructure.com>
Product-Review: Bryan Madsen <bryan@instructure.com>
QA-Review: Bryan Madsen <bryan@instructure.com>