'Deletes the specified Lambda function code and configuration.
This operation requires permission for the
`lambda:DeleteFunction` action.
:type function_name: string
:param function_name: The Lambda function to delete.'

def delete_function(self, function_name):

    uri = '/2014-11-13/functions/{0}'.format(function_name)
    return self.make_request('DELETE', uri, expected_status=204)
