Kill the XMLRPC transport

it looks unused.

swh/lister/core/lister_transports.py

@@ -7,7 +7,6 @@ import random
 from datetime import datetime
 from email.utils import parsedate
 from pprint import pformat
-from xmlrpc import client
 
 import requests
 import xmltodict
@@ -21,62 +20,6 @@ from .abstractattribute import AbstractAttribute
 from .lister_base import FetchError
 
 
-class ListerXMLRPCTransport(abc.ABC):
-    """Use the xmlrpc library for making Lister endpoint requests.
-
-    To be used in conjunction with SWHListerBase or a subclass of it.
-    """
-    SERVER = AbstractAttribute('string containing the server to contact for '
-                               'information')
-
-    def __init__(self):
-        self.lister_version = __version__
-
-    def get_client(self, path):
-        """Initialize client to query for result
-
-        """
-        return client.ServerProxy(path)
-
-    def request_uri(self, _):
-        """Same uri called once
-
-        """
-        return self.SERVER
-
-    def request_params(self, identifier):
-        """Cannot pass any parameters to query to the xmlrpc client so cannot
-           even pass our user-agent specifics.
-
-        """
-        return {}
-
-    def transport_quota_check(self, response):
-        """No rate limit dealing explained.
-
-        """
-        return False, 0
-
-    def transport_request(self, identifier):
-        """Implements SWHListerBase.transport_request
-
-        """
-        path = self.request_uri(identifier)
-        try:
-            return self.get_client(path)
-        except Exception as e:
-            raise FetchError(e)
-
-    def transport_response_to_string(self, response):
-        """Implements SWHListerBase.transport_response_to_string for XMLRPC
-           given responses.
-
-        """
-        s = pformat(self.SERVER)
-        s += '\n#\n' + pformat(response)  # Note: will potentially be big
-        return s
-
-
 class SWHListerHttpTransport(abc.ABC):
     """Use the Requests library for making Lister endpoint requests.