code: def tearDown(self):
      shutil.rmtree(self.output_dir)
  
imports: from numpy.testing import TestCase, assert_equal
  from aubio import slice_source_at_stamps
  from utils import count_files_in_directory, get_default_test_sound
  from utils import count_samples_in_directory, count_samples_in_file
  import tempfile
  import shutil
label_desc: Use image node_id 4 for calling the aubio_slicing_wrong_ends_test_case obj's underlying member method code with example usage: obj.tearDown() without return types