diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 7bfc3d91b5..48a88f755e 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -578,7 +578,6 @@ class RoomMemberStore(RoomMemberWorkerStore):
)
txn.execute(sql, (user_id, room_id))
- txn.call_after(self.was_forgotten_at.invalidate_all)
txn.call_after(self.did_forget.invalidate, (user_id, room_id))
self._invalidate_cache_and_stream(
txn, self.who_forgot_in_room, (room_id,)
@@ -609,31 +608,6 @@ class RoomMemberStore(RoomMemberWorkerStore):
count = yield self.runInteraction("did_forget_membership", f)
defer.returnValue(count == 0)
- @cachedInlineCallbacks(num_args=3)
- def was_forgotten_at(self, user_id, room_id, event_id):
- """Returns whether user_id has elected to discard history for room_id at
- event_id.
-
- event_id must be a membership event."""
- def f(txn):
- sql = (
- "SELECT"
- " forgotten"
- " FROM"
- " room_memberships"
- " WHERE"
- " user_id = ?"
- " AND"
- " room_id = ?"
- " AND"
- " event_id = ?"
- )
- txn.execute(sql, (user_id, room_id, event_id))
- rows = txn.fetchall()
- return rows[0][0]
- forgot = yield self.runInteraction("did_forget_membership_at", f)
- defer.returnValue(forgot == 1)
-
@defer.inlineCallbacks
def _background_add_membership_profile(self, progress, batch_size):
target_min_stream_id = progress.get(
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