old_contents: from iconizer.django_in_iconizer.django_server import DjangoServer
  from iconizer.django_in_iconizer.postgresql_checker import PostgreSqlChecker
  from iconizer.iconizer_app_root import IconizerAppRoot
  
  
  class DjangoStarter(IconizerAppRoot):
      django_main_script_name = "manage.py"
      app_root_folder_name = "server_for_django_15_and_below"
  
      def __init__(self):
          self.django_server = DjangoServer(self.django_main_script_name)
          super(DjangoStarter, self).__init__()
  
      def init_ufs_db(self):
          self.django_server.execute_cmd("migrate")
          self.django_server.execute_cmd("create_default_super_user")
  
new_contents: from iconizer.django_in_iconizer.django_server import DjangoServer
  from iconizer.iconizer_app_root import IconizerAppRoot
  
  
  class DjangoStarter(IconizerAppRoot):
      django_main_script_name = "manage.py"
      app_root_folder_name = "server_for_django_15_and_below"
  
      def __init__(self):
          self.django_server = DjangoServer(self.django_main_script_name)
          super(DjangoStarter, self).__init__()
  
      def init_ufs_db(self):
          self.django_server.execute_cmd("migrate")
          self.django_server.execute_cmd("create_default_super_user")
  
subject: Remove unused import.