def get_fs(path):
  if is_s3url(path):
    return S3FileSystem(path)
  return LocalFileSystem(path)
A removed named field should not occur in fields.
dataset/ETHPy150Open bloomreach/briefly/src/briefly/fs.py/get_fs--crossover with--dataset/ETHPy150Open ralphm/wokkel/wokkel/test/test_data_form.py/FormTest.test_removeFieldNamed