spec: fix gradeable_students spec failure
spec: fix gradeable_students spec failure

caused by unfortunate timing wrt merging of
I7dde803439efac7287b225bd2d60c468f90cdec0
and
Ib79f8f04bd455575c4ae2e99c37763094f062982

Change-Id: I756afb11a0cd20790556769f604df7ce7bac0ef8
Reviewed-on: https://gerrit.instructure.com/63456
Reviewed-by: Dan Minkevitch <2591e5f46f28d303f9dc027d475a5c60d8dea17a@instructure.com>
Product-Review: James Williams  <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>
QA-Review: James Williams  <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>
Tested-by: James Williams  <3a5f4ed991dbfa5c9ef76ad729d240ca12f62180@instructure.com>

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