Fix pyflakes errors

synapse/handlers/federation.py

@@ -175,7 +175,7 @@ class FederationHandler(BaseHandler):
 
         try:
             yield self.store.store_room(
-                event.room_id,
+                room_id,
                 "",
                 is_public=False
             )

synapse/handlers/presence.py

@@ -674,7 +674,7 @@ class PresenceHandler(BaseHandler):
 
     def push_update_to_clients(self, observer_user, observed_user,
                                statuscache):
-        state = statuscache.make_event(user=observed_user, clock=self.clock)
+        statuscache.make_event(user=observed_user, clock=self.clock)
 
         self.notifier.on_new_user_event(
             observer_user.to_string(),

synapse/handlers/room.py

@@ -20,8 +20,7 @@ from synapse.types import UserID, RoomAlias, RoomID
 from synapse.api.constants import Membership
 from synapse.api.errors import RoomError, StoreError, SynapseError
 from synapse.api.events.room import (
-    RoomTopicEvent, MessageEvent, InviteJoinEvent, RoomMemberEvent,
-    RoomConfigEvent
+    RoomTopicEvent, RoomMemberEvent, RoomConfigEvent
 )
 from synapse.api.streams.event import EventStream, EventsStreamData
 from synapse.handlers.presence import PresenceStreamData
@@ -29,7 +28,6 @@ from synapse.util import stringutils
 from ._base import BaseHandler
 
 import logging
-import json
 
 logger = logging.getLogger(__name__)
 
@@ -303,8 +301,6 @@ class MessageHandler(BaseHandler):
             except:
                 logger.exception("Failed to get snapshot")
 
-        user = self.hs.parse_userid(user_id)
-
         ret = {"rooms": rooms_ret, "presence": presence[0], "end": now_token}
 
         # logger.debug("snapshot_all_rooms returning: %s", ret)