diff --git a/synapse/events/builder.py b/synapse/events/builder.py
index d4cb602eb..a9b1b99a1 100644
--- a/synapse/events/builder.py
+++ b/synapse/events/builder.py
@@ -33,12 +33,6 @@ class EventBuilder(EventBase):
             unsigned=unsigned
         )
 
-    def update_event_key(self, key, value):
-        self._event_dict[key] = value
-
-    def update_event_keys(self, other_dict):
-        self._event_dict.update(other_dict)
-
     def build(self):
         return FrozenEvent.from_event(self)
 
diff --git a/synapse/storage/room.py b/synapse/storage/room.py
index 978b2c4a4..6542f8e4f 100644
--- a/synapse/storage/room.py
+++ b/synapse/storage/room.py
@@ -58,13 +58,6 @@ class RoomStore(SQLBaseStore):
             logger.error("store_room with room_id=%s failed: %s", room_id, e)
             raise StoreError(500, "Problem creating room.")
 
-    def store_room_config(self, room_id, visibility):
-        return self._simple_update_one(
-            table=RoomsTable.table_name,
-            keyvalues={"room_id": room_id},
-            updatevalues={"is_public": visibility}
-        )
-
     def get_room(self, room_id):
         """Retrieve a room.
 
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index 532751770..71db16d0e 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -78,12 +78,6 @@ class StateStore(SQLBaseStore):
             f,
         )
 
-    def store_state_groups(self, event):
-        return self.runInteraction(
-            "store_state_groups",
-            self._store_state_groups_txn, event
-        )
-
     def _store_state_groups_txn(self, txn, event, context):
         if context.current_state is None:
             return
diff --git a/tests/storage/test_room.py b/tests/storage/test_room.py
index 11761fe29..e7739776e 100644
--- a/tests/storage/test_room.py
+++ b/tests/storage/test_room.py
@@ -56,17 +56,6 @@ class RoomStoreTestCase(unittest.TestCase):
             (yield self.store.get_room(self.room.to_string()))
         )
 
-    @defer.inlineCallbacks
-    def test_store_room_config(self):
-        yield self.store.store_room_config(self.room.to_string(),
-            visibility=False
-        )
-
-        self.assertObjectHasAttributes(
-            {"is_public": False},
-            (yield self.store.get_room(self.room.to_string()))
-        )
-
     @defer.inlineCallbacks
     def test_get_rooms(self):
         # get_rooms does an INNER JOIN on the room_aliases table :(