def delete_user_key(self):
        try:
            self.storage.delete_user_key()
        except Exception as e:
            logging.error('Unable to delete SSH key file: %s' % e)
            raise
Authenticates the user based on the email field 
dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/ssh/client.py/SSHClient.delete_user_key--crossover with--dataset/ETHPy150Open jjdelc/django-easy-registration/easyreg/backends.py/authenticate