(cls, username)
This makes sure that any outstanding AsyncSignupRequest associated with
        username is deleted.
        :param username: string
This makes sure that any outstanding AsyncSignupRequest associated with
        username is deleted.
        :param username: string
This makes sure that any outstanding AsyncSignupRequest associated with username is deleted . : param username : string
def clear_data_for_username(cls, username):
        """
        This makes sure that any outstanding AsyncSignupRequest associated with
        username is deleted.
        :param username: string
        """
        cls.objects.filter(username=username).delete()
def clear_data_for_username ( cls , username ) : cls . objects . filter ( username = username ) . delete ( )