code: def cleanup_unused_files(output_path: str):
      """
      Cleanup the unused folders, as the data now exists in the VISSL compatible format.
      """
      for file_to_delete in [
          "cars_train",
          "cars_test",
          "car_devkit.tgz",
          "cars_test.tgz",
          "cars_test_annos_withlabels.mat",
          "cars_train.tgz",
      ]:
          file_to_delete = os.path.join(output_path, file_to_delete)
          cleanup_dir(file_to_delete)
  
imports: import argparse
  import os
  import shutil
  from scipy import io
  from torch.utils.data import DataLoader
  from tqdm import tqdm
  from vissl.utils.download import download_and_extract_archive, download_url
  from vissl.utils.io import cleanup_dir
label_desc: Use image node_id 4 for calling a global function with example usage: cleanup_unused_files(output_path) without return types