stalwart: Remove admin pw stuff

stalwart/templates/configmap.yaml

@@ -80,10 +80,6 @@ data:
     type = "internal"
     store = "rocksdb"
 
-    [authentication.fallback-admin]
-    user = "admin"
-    secret = "{{ .Values.config.adminPasswordHash }}"
-
     [tracer.log]
     type = "log"
     enable = true

stalwart/values.yaml

@@ -33,5 +33,3 @@ config:
     - "10.0.0.0/8"
   # Trust X-Forwarded-For header from reverse proxy for real client IP
   useXForwarded: true
-  # Admin password hash (generate with: echo -n 'password' | openssl passwd -6 -stdin)
-  adminPasswordHash: "$6$nUKyIdu3tyREoEza$lfXMSXAmDzokPlsXasZw6gvSKkLE/2xxC4Jp5Wq2cFA0wi1udS.lt5Kvp2EuUA7ZWNbkP7foG4BseXkIR24e40"