Revert ConfigMap mount - caused crashes

Mounting opencloud-config ConfigMap to /etc/opencloud caused pod crashes
because the YAML contains placeholders like ${ENV_VAR} that aren't expanded.

Issue: OpenCloud expects actual values in config files, but ConfigMaps
don't perform environment variable substitution.

Solution: Use environment variables only (highest precedence per docs).
The current deployment with ENV vars works correctly - no file config needed.

Alternative: If file config is required, use an init container to:
1. Read the ConfigMap template
2. Substitute environment variables
3. Write the expanded config to /etc/opencloud

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apps/opencloud/opencloud-deployment.yaml

@@ -448,8 +448,6 @@ spec:
         volumeMounts:
         - name: opencloud-data
           mountPath: /var/lib/opencloud
-        - name: opencloud-config
-          mountPath: /etc/opencloud
         resources:
           requests:
             memory: "512Mi"
@@ -476,9 +474,6 @@ spec:
       - name: opencloud-data
         persistentVolumeClaim:
           claimName: opencloud-data
-      - name: opencloud-config
-        configMap:
-          name: opencloud-config
 ---
 # Ingress
 apiVersion: networking.k8s.io/v1