old_contents: from nose.plugins.skip import SkipTest
  from nose.plugins.attrib import attr
  from ..expectations import ParseExpectationsFromFile
  
  
  class LandmarkPreservation(ParseExpectationsFromFile):
  
      def __init__(self, *args, **kwds):
          super(LandmarkPreservation, self).__init__(*args, **kwds)
  
      @attr(test='wip')
      def testLandmarkPreservation(self):
          'landmark preservation sample'
          self.checkExpectation('ad-sample4.txt', 'ad-expected4.txt')
  
new_contents: import pytest
  from ..expectations import ParseExpectationsFromFile
  
  
  class LandmarkPreservation(ParseExpectationsFromFile):
  
      def __init__(self, *args, **kwds):
          super(LandmarkPreservation, self).__init__(*args, **kwds)
  
      def testLandmarkPreservation(self):
          'landmark preservation sample'
          self.checkExpectation('ad-sample4.txt', 'ad-expected4.txt')
  
subject: trim dead code