Apparently asyncio.set_event_loop() isn't necessary.

I think this is because we never start a task from inside this worker thread. Tasks are always given to the worker thread from outside of it.

api/tests/opentrons/async_object_to_thread.py

@@ -56,7 +56,7 @@ def _in_thread() -> None:
         # so we will always reach this point to unblock the parent thread.
         loop_queue.put(loop)
 
-        asyncio.set_event_loop(loop)
+        asyncio.set_event_loop(loop)  # Apparently this isn't necessary????
         loop.run_forever()
 
         # If we've reached here, the loop has been stopped from outside this thread. Clean it up.