class_docstr: Test the Ubuntu Corpus trainer class.
class_docstr_tok: ["Test","the","Ubuntu","Corpus","trainer","class","."]
docstr: Clean up by removing the corpus data directory.
docstr_tok: ["Clean","up","by","removing","the","corpus","data","directory","."]
code: def _remove_data(self):
      """
      Clean up by removing the corpus data directory.
      """
      import shutil
  
      if os.path.exists(self.trainer.data_directory):
          shutil.rmtree(self.trainer.data_directory)
  
imports: from unittest.mock import Mock
  from io import BytesIO
  import tarfile
  import os
  from tests.base_case import ChatBotTestCase
  from chatterbot.trainers import UbuntuCorpusTrainer
label_desc: Use image node_id 4 for calling the UbuntuCorpusTrainerTestCase obj's underlying member method code with example usage: obj._remove_data() without return types