diff --git a/src/datasets/features/pdf.py b/src/datasets/features/pdf.py
index b3e3e30bd67..4d93b6af14c 100644
--- a/src/datasets/features/pdf.py
+++ b/src/datasets/features/pdf.py
@@ -241,13 +241,4 @@ def cast_storage(self, storage: Union[pa.StringArray, pa.StructArray, pa.ListArr
             else:
                 path_array = pa.array([None] * len(storage), type=pa.string())
             storage = pa.StructArray.from_arrays([bytes_array, path_array], ["bytes", "path"], mask=storage.is_null())
-        # elif pa.types.is_list(storage.type):
-        #     bytes_array = pa.array(
-        #         [encode_np_array(np.array(arr))["bytes"] if arr is not None else None for arr in storage.to_pylist()],
-        #         type=pa.binary(),
-        #     )
-        #     path_array = pa.array([None] * len(storage), type=pa.string())
-        #     storage = pa.StructArray.from_arrays(
-        #         [bytes_array, path_array], ["bytes", "path"], mask=bytes_array.is_null()
-        #     )
         return array_cast(storage, self.pa_type)