Replace noop background updates with DELETE. (#12954)

Removes the `register_noop_background_update` and deletes the background
updates directly in a delta file.

1 files changed, 0 insertions, 5 deletions

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

index b95dbef678..538451b05f 100644
--- a/synapse/storage/databases/main/stats.py
+++ b/synapse/storage/databases/main/stats.py
@@ -120,11 +120,6 @@ class StatsStore(StateDeltasStore):
         self.db_pool.updates.register_background_update_handler(
             "populate_stats_process_users", self._populate_stats_process_users
         )
-        # we no longer need to perform clean-up, but we will give ourselves
-        # the potential to reintroduce it in the future – so documentation
-        # will still encourage the use of this no-op handler.
-        self.db_pool.updates.register_noop_background_update("populate_stats_cleanup")
-        self.db_pool.updates.register_noop_background_update("populate_stats_prepare")
 
     async def _populate_stats_process_users(
         self, progress: JsonDict, batch_size: int