chore(coolify): remove SSH config volume mounts

No longer needed after Coolify update — verified on VPS, container
stays healthy without them.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

coolify/compose.yml

@@ -31,8 +31,6 @@ services:
       - ../.data/coolify/storage/databases:/var/www/html/storage/app/databases
       - ../.data/coolify/storage/services:/var/www/html/storage/app/services
       - ../.data/coolify/storage/backups:/var/www/html/storage/app/backups
-      - ./ssh_config:/etc/ssh/ssh_config.d/gitea.conf:ro
-      - ./ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro
     depends_on:
       db:
         condition: service_healthy