Remove unnecessary test in rpc_test.py (#41218)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41218
This test doesn't assert anything and was accidentally committed as
part of a larger diff a few months ago.
ghstack-source-id: 107882848
Test Plan: CI
Reviewed By: ezyang
Differential Revision: D22469852
fbshipit-source-id: 0baa23da56b08200e16cf66df514566223dd9b15
