old_contents: import urlparse
  
  class MutableJenkinsThing(object):
      """
      """
      def get_delete_url(self):
          return '%s/doDelete' % self.baseurl
  
      def get_rename_url(self):
          return '%s/doRename' % self.baseurl
  
new_contents: class MutableJenkinsThing(object):
      """
      A mixin for certain mutable objects which can be renamed and deleted.
      """
      def get_delete_url(self):
          return '%s/doDelete' % self.baseurl
  
      def get_rename_url(self):
          return '%s/doRename' % self.baseurl
  
subject: Remove a redundant import