Fix test_rpc_profiling_remote_record_function (#45162)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45162
This test was flaky because it was not able to validate that the
overall record_function's CPU times are greater than the sum of its children.
It turns out that this is a general bug in the profiler that can be reproduced
without RPC, see https://github.com/pytorch/pytorch/issues/45160. Hence,
removing this from the test and replacing it by just validating the expected
children.
Ran the test 1000 times and they all passed.
ghstack-source-id: 112632327
Test Plan: CI
Reviewed By: mrshenli
Differential Revision: D23851854
fbshipit-source-id: 5d9023acd17800a6668ba4849659d8cc902b8d6c
