diff --git a/cognite/pygen/_core/generators.py b/cognite/pygen/_core/generators.py
index 9dde3e9bf..11e418fe8 100644
--- a/cognite/pygen/_core/generators.py
+++ b/cognite/pygen/_core/generators.py
@@ -647,10 +647,6 @@ def generate_data_class_file(self, is_pydantic_v2: bool) -> str:
         else:
             raise ValueError(f"Unknown data class {type(self.data_class)}")
 
-        def create_start_node_set(group: list[EdgeAPIClass]) -> str:
-            joined = ", ".join([g.start_class.write_name for g in group])
-            return f"{{{joined}}}"
-
         if is_pydantic_v2 and self.data_class.has_any_field_model_prefix:
             names = ", ".join(field.name for field in self.data_class.fields if field.name.startswith("name"))
             warnings.warn(