diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py

index 1d27439536..a94bec1ac5 100644
--- a/synapse/storage/databases/main/stream.py
+++ b/synapse/storage/databases/main/stream.py
@@ -589,19 +589,6 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore, metaclass=abc.ABCMeta):
             )
             return "t%d-%d" % (topo, token)
 
-    async def get_stream_id_for_event(self, event_id: str) -> int:
-        """The stream ID for an event
-        Args:
-            event_id: The id of the event to look up a stream token for.
-        Raises:
-            StoreError if the event wasn't in the database.
-        Returns:
-            A stream ID.
-        """
-        return await self.db_pool.runInteraction(
-            "get_stream_id_for_event", self.get_stream_id_for_event_txn, event_id,
-        )
-
     def get_stream_id_for_event_txn(
         self, txn: LoggingTransaction, event_id: str, allow_none=False,
     ) -> int: