Add super() calls for Fx TestCases (#74216)
Summary:
The fx test case wasn't disabled properly because it didn't call the parent class' setUp().
Pull Request resolved: https://github.com/pytorch/pytorch/pull/74216
Reviewed By: zou3519
Differential Revision: D34898707
Pulled By: janeyx99
fbshipit-source-id: 83e56f5a1efc50d24646c182160f7cfcb5bc9935
(cherry picked from commit bb8dd72d1640c1ef0201d615c5d405479afdf078)
