code: def remove_templates(self):
          
          self.hosts.remove_templates()
          self.contacts.remove_templates()
          self.services.remove_templates()
          self.servicedependencies.remove_templates()
          self.hostdependencies.remove_templates()
          self.timeperiods.remove_templates()
docs: Clean useless elements like templates because they are not needed anymore
  
          :return: None