Revert "Fix hanging nexus test by cleaning up NonTerminatingWorkflow"

This reverts commit 43b7083.

Author: dandavison

tests/nexus/test_workflow_caller_errors.py

@@ -206,7 +206,7 @@ async def test_nexus_operation_fails_without_retry_as_handler_error(
         client,
         nexus_service_handlers=[ErrorTestService()],
         nexus_task_executor=concurrent.futures.ThreadPoolExecutor(max_workers=1),
-        workflows=[CallerWorkflow, NonTerminatingWorkflow],
+        workflows=[CallerWorkflow],
         task_queue=input.task_queue,
     ):
         await create_nexus_endpoint(input.task_queue, client)
@@ -227,13 +227,6 @@ async def test_nexus_operation_fails_without_retry_as_handler_error(
             assert handler_error_message in str(handler_error)
         else:
             pytest.fail("Unreachable")
-        finally:
-            if operation_name == "fails_due_to_workflow_already_started":
-                try:
-                    handle = client.get_workflow_handle("second-start-request-will-fail")
-                    await handle.terminate()
-                except Exception:
-                    pass
 
 
 # Start timeout test