Quizzes and Assignments pass #destroy calls back and forth

While we can't reproduce locally, this code change will cause an
exception in the future which should provide additional information
about what is happening.

Closes CNVS-14864

Change-Id: I80fb1297a1d76c7fdc51715b09dde345e4ab47fc
Reviewed-on: https://gerrit.instructure.com/40117
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Derek DeVries <ddevries@instructure.com>
QA-Review: Trevor deHaan <tdehaan@instructure.com>
Product-Review: Ryan Taylor <rtaylor@instructure.com>