Remove Gotify default user credentials

Removed default Gotify user credentials from compose file.

duplicati/compose.yml

@@ -8,8 +8,6 @@ services:
       - PGID=0
       - TZ=Europe/Amsterdam
       - SETTINGS_ENCRYPTION_KEY=MijnSuperVeiligeKey2026!
-      - GOTIFY_DEFAULTUSER_NAME=Misticdruid
-      - GOTIFY_DEFAULTUSER_PASS=4A9n*$3#IPj*Xf
     volumes:
       - /opt/duplicati/config:/config
       - /var/lib/docker/volumes:/source:ro