Retire legacy Mumble PostgreSQL resources

apps/backup/postgresql/default-mumble/kustomization.yaml

@@ -1,24 +0,0 @@
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: default
-namePrefix: default-mumble-
-resources: [../base]
-patches:
-  - target: {kind: CronJob, name: postgresql-backup}
-    patch: |-
-      apiVersion: batch/v1
-      kind: CronJob
-      metadata: {name: postgresql-backup}
-      spec:
-        schedule: "0 3 * * *"
-        jobTemplate:
-          spec:
-            template:
-              spec:
-                containers:
-                  - name: pg-dump
-                    env:
-                      - {name: BACKUP_TARGET, value: default-mumble}
-                      - {name: PGHOST, value: mumble-postgresql}
-                      - name: PGPASSWORD
-                        valueFrom: {secretKeyRef: {name: mumble-postgres, key: postgres-password}}