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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete_instance(self, nova, instance):
 """Delete the specified instance."""


        # /!\ DEPRECATION WARNING
        self.log.warn('/!\\ DEPRECATION WARNING:  use '
                      'delete_resource instead of delete_instance.')
        self.log.debug('Deleting instance ({})...'.format(instance))
        return self.delete_resource(nova.servers, instance,
                                    msg='nova instance')