'Delete a user including the user\'s path, GUID and ARN.
If the user_name is not specified, the user_name is determined
implicitly based on the AWS Access Key ID used to sign the request.
:type user_name: string
:param user_name: The name of the user to delete.'

def delete_user(self, user_name):

    params = {'UserName': user_name}
    return self.get_response('DeleteUser', params)
