made the bridge use the default postgres db

roles/matrix-bridge-mautrix-signal/templates/config.yaml.j2

@@ -27,7 +27,7 @@ appservice:
     max_body_size: 1
 
     # The full URI to the database. Only Postgres is currently supported.
-    database: {{ matrix_mautrix_signal_db_url }}
+    database: {{ matrix_mautrix_signal_database_connection_string }}
 
     # Provisioning API part of the web server for automated portal creation and fetching information.
     # Used by things like mautrix-manager (https://github.com/tulir/mautrix-manager).

roles/matrix-bridge-mautrix-signal/templates/systemd/matrix-mautrix-signal-db.service.j2

@@ -1,33 +0,0 @@
-#jinja2: lstrip_blocks: "True"
-[Unit]
-Description=Matrix Mautrix Signal database server
-
-[Service]
-Type=simple
-
-ExecStartPre=-{{ matrix_host_command_docker }} kill {{ matrix_mautrix_signal_db_host }}
-ExecStartPre=-{{ matrix_host_command_docker }} rm {{ matrix_mautrix_signal_db_host }}
-
-# Intentional delay, so that the homeserver (we likely depend on) can manage to start.
-ExecStartPre={{ matrix_host_command_sleep }} 5
-
-ExecStart={{ matrix_host_command_docker }} run --rm --name {{ matrix_mautrix_signal_db_host }} \
-			--log-driver=none \
-			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
-			--network={{ matrix_docker_network }} \
-			--env POSTGRES_USER={{ matrix_mautrix_signal_db_user }} \
-			--env POSTGRES_PASSWORD={{ matrix_mautrix_signal_db_password }} \
-			--env POSTGRES_DB={{ matrix_mautrix_signal_db_database }} \
-			-v {{ matrix_mautrix_signal_db_storage_path }}:/var/lib/postgresql/data:z \
-			-v /etc/passwd:/etc/passwd:ro \
-			{{ matrix_mautrix_signal_db_docker_image }}
-
-ExecStop=-{{ matrix_host_command_docker }} kill {{ matrix_mautrix_signal_db_host }}
-ExecStop=-{{ matrix_host_command_docker }} rm {{ matrix_mautrix_signal_db_host }}
-
-Restart=always
-RestartSec=30
-SyslogIdentifier=matrix-mautrix-signal-db
-
-[Install]
-WantedBy=multi-user.target