Address CI failure (unused import)

Author: nkrishnaswami

openapi_python_client/parser/responses.py

@@ -12,7 +12,7 @@
 from .. import schema as oai
 from ..utils import PythonIdentifier
 from .errors import ParseError, PropertyError
-from .properties import AnyProperty, Property, Schemas, StringProperty, property_from_data
+from .properties import AnyProperty, Property, Schemas, property_from_data
 
 
 class _ResponseSource(TypedDict):