code: def tearDown(self):
      try:
          os.unlink(os_helper.TESTFN)
      except:
          pass
  
imports: import io
  import _pyio
  import unittest
  import os
  import sys
  from test.support import os_helper
label_desc: Use image node_id 2 for calling the TestGenericUnivNewlines obj's underlying member method code with example usage: obj.tearDown() without return types