apps(metrics): Remove unused monitor

apps/metrics/app.yaml

@@ -9,4 +9,3 @@ resources:
   - app/release.yaml
   - app/prometheus.yaml
   - app/route.yaml
-  - app/monitor.yaml

apps/metrics/app/monitor.yaml

@@ -1,20 +0,0 @@
-apiVersion: monitoring.coreos.com/v1
-kind: ServiceMonitor
-metadata:
-  labels:
-    name: prometheus
-  name: prometheus
-  namespace: metrics
-spec:
-  endpoints:
-  - interval: 30s
-    targetPort: 9090
-    path: /metrics
-  - interval: 30s
-    targetPort: 8080
-    path: /metrics
-  namespaceSelector:
-    any: true
-  selector:
-    matchLabels:
-      prometheus.io/scrape: "true"