diff --git a/synapse/storage/schema/delta/56/hidden_devices.sql b/synapse/storage/schema/delta/56/hidden_devices.sql
deleted file mode 100644
index 67f8b20297..0000000000
--- a/synapse/storage/schema/delta/56/hidden_devices.sql
+++ /dev/null
@@ -1,18 +0,0 @@
-/* Copyright 2019 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.
- * 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.
- */
-
--- device list needs to know which ones are "real" devices, and which ones are
--- just used to avoid collisions
-ALTER TABLE devices ADD COLUMN hidden BOOLEAN DEFAULT FALSE;
diff --git a/synapse/storage/schema/delta/56/signing_keys.sql b/synapse/storage/schema/delta/56/signing_keys.sql
deleted file mode 100644
index 27a96123e3..0000000000
--- a/synapse/storage/schema/delta/56/signing_keys.sql
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright 2019 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.
- * 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.
- */
-
--- cross-signing keys
-CREATE TABLE IF NOT EXISTS e2e_cross_signing_keys (
- user_id TEXT NOT NULL,
- -- the type of cross-signing key (master, user_signing, or self_signing)
- keytype TEXT NOT NULL,
- -- the full key information, as a json-encoded dict
- keydata TEXT NOT NULL,
- -- for keeping the keys in order, so that we can fetch the latest one
- stream_id BIGINT NOT NULL
-);
-
-CREATE UNIQUE INDEX e2e_cross_signing_keys_idx ON e2e_cross_signing_keys(user_id, keytype, stream_id);
-
--- cross-signing signatures
-CREATE TABLE IF NOT EXISTS e2e_cross_signing_signatures (
- -- user who did the signing
- user_id TEXT NOT NULL,
- -- key used to sign
- key_id TEXT NOT NULL,
- -- user who was signed
- target_user_id TEXT NOT NULL,
- -- device/key that was signed
- target_device_id TEXT NOT NULL,
- -- the actual signature
- signature TEXT NOT NULL
-);
-
-CREATE UNIQUE INDEX e2e_cross_signing_signatures_idx ON e2e_cross_signing_signatures(user_id, target_user_id, target_device_id);
-
--- stream of user signature updates
-CREATE TABLE IF NOT EXISTS user_signature_stream (
- -- uses the same stream ID as device list stream
- stream_id BIGINT NOT NULL,
- -- user who did the signing
- from_user_id TEXT NOT NULL,
- -- list of users who were signed, as a JSON array
- user_ids TEXT NOT NULL
-);
-
-CREATE UNIQUE INDEX user_signature_stream_idx ON user_signature_stream(stream_id);
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