fix style

Author: chapman73

onnxscript/utils/model_proto_to_function_proto.py

@@ -46,9 +46,7 @@ def convert_model_proto_to_function_proto(
     Since function protos don't support initializers (or rather it does not make sense in the context of a function)
     we need to convert them to constants first.
     """
-    model = _initializers_to_constants(
-        model
-    )
+    model = _initializers_to_constants(model)
     model_ir = onnx_ir.serde.deserialize_model(model)
     function_ir = onnx_ir.Function(
         domain=domain, name=name, graph=model_ir.graph, attributes={}