chore: Remove dead code

Author: Constantinos Symeonides

Diff for: openapi_python_client/parser/properties/model_property.py

@@ -73,25 +73,12 @@ def _process_properties(*, data: oai.Schema, schemas: Schemas, class_name: str)
     relative_imports: Set[str] = set()
     required_set = set(data.required or [])
 
-    def _check_existing(prop: Property) -> Union[Property, PropertyError]:
-        nonlocal properties
-
-        existing = properties.get(prop.name)
-        prop_or_error = _merge_properties(existing, prop) if existing else prop
-        if isinstance(prop_or_error, PropertyError):
-            prop_or_error.header = f"Found conflicting properties named {prop.name} when creating {class_name}"
-            return prop_or_error
-        properties[prop_or_error.name] = prop_or_error
-        return prop_or_error
-
     unprocessed_props = data.properties or {}
     for key, value in unprocessed_props.items():
         prop_required = key in required_set
         prop_or_error, schemas = property_from_data(
             name=key, required=prop_required, data=value, schemas=schemas, parent_name=class_name
         )
-        if isinstance(prop_or_error, Property):
-            prop_or_error = _check_existing(prop_or_error)
         if isinstance(prop_or_error, PropertyError):
             return prop_or_error