satisfy ruff after some code got commented out

Author: Kosinkadink

comfy_execution/graph.py

@@ -6,7 +6,6 @@
 import inspect
 from comfy_execution.graph_utils import is_link, ExecutionBlocker
 from comfy.comfy_types.node_typing import ComfyNodeABC, InputTypeDict, InputTypeOptions
-from comfy_api.latest import IO
 
 # NOTE: ExecutionBlocker code got moved to graph_utils.py to prevent torch being imported too soon during unit tests
 ExecutionBlocker = ExecutionBlocker