apply ruff

Author: espoirMur

pandas/core/arrays/string_.py

@@ -728,7 +728,6 @@ def __arrow_array__(self, type=None):
         values[self.isna()] = None
         return pa.array(values, type=type, from_pandas=True)
 
-    
     def _values_for_factorize(self) -> tuple[np.ndarray, libmissing.NAType | float]:  # type: ignore[override]
         arr = self._ndarray