diff --git a/synapse/storage/schema/delta/34/sent_txn_purge.py b/synapse/storage/schema/delta/34/sent_txn_purge.py
deleted file mode 100644
index 0ffab10b6f..0000000000
--- a/synapse/storage/schema/delta/34/sent_txn_purge.py
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright 2016 OpenMarket Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import logging
-
-from synapse.storage.engines import PostgresEngine
-
-logger = logging.getLogger(__name__)
-
-
-def run_create(cur, database_engine, *args, **kwargs):
- if isinstance(database_engine, PostgresEngine):
- cur.execute("TRUNCATE sent_transactions")
- else:
- cur.execute("DELETE FROM sent_transactions")
-
- cur.execute("CREATE INDEX sent_transactions_ts ON sent_transactions(ts)")
-
-
-def run_upgrade(cur, database_engine, *args, **kwargs):
- pass
diff --git a/synapse/storage/schema/delta/11/v11.sql b/synapse/storage/schema/delta/53/drop_sent_transactions.sql
index e7b4f90127..e372f5a44a 100644
--- a/synapse/storage/schema/delta/11/v11.sql
+++ b/synapse/storage/schema/delta/53/drop_sent_transactions.sql
@@ -1,4 +1,4 @@
-/* Copyright 2015, 2016 OpenMarket Ltd
+/* Copyright 2018 New Vector Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,4 +13,4 @@
* limitations under the License.
*/
-CREATE INDEX IF NOT EXISTS sent_transaction_txn_id ON sent_transactions(transaction_id);
\ No newline at end of file
+DROP TABLE IF EXISTS sent_transactions;
|