In some distributions of Synapse 1.16.0, we incorrectly included a database
migration which added a new, unused table. This release removes the redundant
table.
Bugfixes
--------
- Drop table `local_rejections_stream` which was incorrectly added in Synapse 1.16.0. ([\#7816](https://github.com/matrix-org/synapse/issues/7816), [b1beb3ff5](https://github.com/matrix-org/synapse/commit/b1beb3ff5))