Merge pull request #288 from matrix-org/markjh/unused_definitions

scripts-dev/definitions.py

scripts/synapse_port_db

synapse/api/errors.py

synapse/app/homeserver.py

synapse/handlers/federation.py

synapse/handlers/room.py

synapse/state.py

synapse/storage/_base.py

synapse/storage/event_federation.py

synapse/storage/events.py

synapse/storage/pusher.py

synapse/storage/roommember.py

synapse/storage/signatures.py

synapse/storage/state.py

synapse/streams/events.py

synapse/util/__init__.py

tests/rest/client/v1/test_presence.py

tests/storage/test_base.py