Revert change to counting of deactivated users towards the monthly active users limit (#11127)

Temporarily revert "Add functionality to remove deactivated users from the monthly_active_users table (#10947)".

This reverts commit eda8c88b84ee7506379a71ac2a7a88c08b759d43.

2 files changed, 0 insertions, 28 deletions

diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py

index e88c3c27ce..bee62cf360 100644
--- a/synapse/handlers/deactivate_account.py
+++ b/synapse/handlers/deactivate_account.py
@@ -131,10 +131,6 @@ class DeactivateAccountHandler:
         # delete from user directory
         await self.user_directory_handler.handle_local_user_deactivated(user_id)
 
-        # If the user is present in the monthly active users table
-        # remove them
-        await self.store.remove_deactivated_user_from_mau_table(user_id)
-
         # Mark the user as erased, if they asked for that
         if erase_data:
             user = UserID.from_string(user_id)
diff --git a/synapse/storage/databases/main/monthly_active_users.py b/synapse/storage/databases/main/monthly_active_users.py

index ec4d47a560..a14ac03d4b 100644
--- a/synapse/storage/databases/main/monthly_active_users.py
+++ b/synapse/storage/databases/main/monthly_active_users.py
@@ -354,27 +354,3 @@ class MonthlyActiveUsersStore(MonthlyActiveUsersWorkerStore):
                         await self.upsert_monthly_active_user(user_id)
             elif now - last_seen_timestamp > LAST_SEEN_GRANULARITY:
                 await self.upsert_monthly_active_user(user_id)
-
-    async def remove_deactivated_user_from_mau_table(self, user_id: str) -> None:
-        """
-        Removes a deactivated user from the monthly active user
-        table and resets affected caches.
-
-        Args:
-            user_id(str): the user_id to remove
-        """
-
-        rows_deleted = await self.db_pool.simple_delete(
-            table="monthly_active_users",
-            keyvalues={"user_id": user_id},
-            desc="simple_delete",
-        )
-
-        if rows_deleted != 0:
-            await self.invalidate_cache_and_stream(
-                "user_last_seen_monthly_active", (user_id,)
-            )
-            await self.invalidate_cache_and_stream("get_monthly_active_count", ())
-            await self.invalidate_cache_and_stream(
-                "get_monthly_active_count_by_service", ()
-            )