chore: cleanup dev secrets to remove postgres refs (#126)

## Description

This cleans up dev secrets to remove postgres references.

## Related Issue

Fixes #N/A

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [X] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/uds-package-gitlab/blob/main/CONTRIBUTING.md#developer-workflow)
followed

src/dev-secrets/zarf.yaml

@@ -27,23 +27,6 @@ components:
       - name: gitlab-minio
         files:
           - "minio-secret.yaml"
-  - name: postgres-password
-    required: true
-    actions:
-      onDeploy:
-        before:
-          - cmd: kubectl get secret -n dev-postgres postgresql --template={{.data.password}} | base64 -d
-            mute: true
-            setVariables:
-              - name: POSTGRES_DB_PASSWORD
-                sensitive: true
-  - name: gitlab-postgres
-    required: true
-    manifests:
-      - name: gitlab-postgres
-        namespace: gitlab
-        files:
-          - postgres-secret.yaml
   - name: redis-password
     required: true
     actions: