chore: send pg exporter logs to journald

Author: darora

ansible/files/postgres_exporter.service.j2

@@ -5,8 +5,6 @@ Description=Postgres Exporter
 Type=simple
 ExecStart=/opt/postgres_exporter/postgres_exporter --disable-settings-metrics --extend.query-path="/opt/postgres_exporter/queries.yml" --disable-default-metrics
 User=root
-StandardOutput=append:/var/log/postgres_exporter.stdout
-StandardError=append:/var/log/postgres_exporter.error
 Restart=always
 RestartSec=3
 Environment="DATA_SOURCE_NAME=host=localhost dbname=postgres sslmode=disable user=supabase_admin pg_stat_statements.track=none application_name=postgres_exporter"