Remove BaseHandler from ReceiptsHandler.

synapse/handlers/_base.py

@@ -36,7 +36,6 @@ class BaseHandler:
     def __init__(self, hs: "HomeServer"):
         self.store = hs.get_datastore()
         self.auth = hs.get_auth()
-        self.notifier = hs.get_notifier()
         self.distributor = hs.get_distributor()
         self.clock = hs.get_clock()
         self.hs = hs

synapse/handlers/receipts.py

@@ -16,7 +16,6 @@
 
 from synapse.api.constants import ReadReceiptEventFields
 from synapse.appservice import ApplicationService
-from synapse.handlers._base import BaseHandler
 from synapse.streams import EventSource
 from synapse.types import JsonDict, ReadReceipt, UserID, get_domain_from_id
 
@@ -26,10 +25,9 @@
 logger = logging.getLogger(__name__)
 
 
-class ReceiptsHandler(BaseHandler):
+class ReceiptsHandler:
     def __init__(self, hs: "HomeServer"):
-        super().__init__(hs)
-
+        self.notifier = hs.get_notifier()
         self.server_name = hs.config.server.server_name
         self.store = hs.get_datastore()
         self.event_auth_handler = hs.get_event_auth_handler()