code: def tearDown(self):
      if os.path.exists(self.CFG_F):
          os.remove(self.CFG_F)
  
imports: import unittest
  from onmt.translate.translation_server import ServerModel, TranslationServer
  import os
  from textwrap import dedent
  import torch
  from onmt.translate.translator import Translator
label_desc: Use image node_id 1 for calling the TestTranslationServer obj's underlying member method code with example usage: obj.tearDown() without return types