Remove outdated TODO comment (#888)

#866 (comment)

Author: carlcsaposs-canonical

src/relations/async_replication.py

@@ -697,7 +697,6 @@ def set_app_status(self) -> None:
             self.charm.app.status = self.charm.refresh.app_status_higher_priority
             return
         if self.charm._peers is None:
-            # TODO set active status?
             return
         if self.charm._peers.data[self.charm.app].get("promoted-cluster-counter") == "0":
             self.charm.app.status = BlockedStatus(READ_ONLY_MODE_BLOCKING_MESSAGE)