Downloading from GCS is a info message, rather than warning

PiperOrigin-RevId: 350337855

Author: Conchylicultor

tensorflow_datasets/core/dataset_builder.py

@@ -433,7 +433,7 @@ def download_and_prepare(self, *, download_dir=None, download_config=None):
       with utils.temporary_assignment(self, "_data_dir", tmp_data_dir):
         if (download_config.try_download_gcs and
             gcs_utils.is_dataset_on_gcs(self.info.full_name)):
-          logging.warning(GCS_HOSTED_MSG, self.name)
+          logging.info(GCS_HOSTED_MSG, self.name)
           gcs_utils.download_gcs_dataset(self.info.full_name, self._data_dir)
           self.info.read_from_directory(self._data_dir)
         else: