drop testgrid-proxy and testgrid-data dns record

dns/zone-configs/k8s.io._0_base.yaml

@@ -361,11 +361,6 @@ _acme-challenge.k8s-testgrid:
 _acme-challenge.testgrid:
   type: CNAME
   value: 3163ff75-f72a-4b9e-b1ff-3c1930137e82.3.authorize.certificatemanager.goog.
-# Running on GKE (@chases2)
-testgrid-data:
-  - type: A
-    values:
-    - 34.98.86.92
 # Verify that @ixdy owns testgrid.k8s.io, necessary to set up custom domain in GAE
 7ujw4gp3z2cq.testgrid:
   type: CNAME

kubernetes/gke-prow/prow/gateway.yaml

@@ -99,5 +99,5 @@ spec:
   - testgrid-api.prow.k8s.io
   rules:
   - backendRefs:
-    - name: testgrid-proxy
+    - name: testgrid-api
       port: 80

kubernetes/gke-prow/prow/testgrid.yaml

@@ -105,70 +105,3 @@ spec:
   - protocol: TCP
     port: 80
     targetPort: 80
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: testgrid-proxy
-  labels:
-    app: testgrid-proxy
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: testgrid-proxy
-  template:
-    metadata:
-      labels:
-        app: testgrid-proxy
-    spec:
-      containers:
-      - name: nginx
-        image: cgr.dev/chainguard/nginx
-        ports:
-        - name: http
-          containerPort: 80
-        resources:
-          requests:
-            cpu: 100m
-            memory: 128Mi
-          limits:
-            cpu: 250m
-            memory: 256Mi
-        volumeMounts:
-        - name: nginx-config
-          mountPath: /etc/nginx/conf.d/nginx.conf
-          subPath: nginx.conf
-      volumes:
-      - name: nginx-config
-        configMap:
-          name: nginx-proxy-config
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: nginx-proxy-config
-data:
-  nginx.conf: |
-    server {
-        listen 80;
-        server_name localhost;
-
-        location / {
-            proxy_pass http://testgrid-data.k8s.io/;
-        }
-    }
-
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: testgrid-proxy
-spec:
-  selector:
-    app: testgrid-proxy
-  ports:
-    - protocol: TCP
-      port: 80
-      targetPort: 80
-  type: ClusterIP