diff --git a/libs/prebuilt/langgraph/prebuilt/tool_node.py b/libs/prebuilt/langgraph/prebuilt/tool_node.py
index a47d5702c..3b30d51cb 100644
--- a/libs/prebuilt/langgraph/prebuilt/tool_node.py
+++ b/libs/prebuilt/langgraph/prebuilt/tool_node.py
@@ -1405,15 +1405,3 @@ def _get_runtime_arg(tool: BaseTool) -> Optional[str]:
     """
     reserved_args = _get_reserved_keyword_args(tool)
     return "runtime" if "runtime" in reserved_args else None
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