Remove deploy of ingress controller from the example [ci skip] (#1933)

docs/examples/customization/external-auth-headers/deploy/default-backend.yaml

@@ -1,48 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: Deployment
-metadata:
-  name: default-http-backend
-  labels:
-    k8s-app: default-http-backend
-  namespace: default
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        k8s-app: default-http-backend
-    spec:
-      terminationGracePeriodSeconds: 60
-      containers:
-      - name: default-http-backend
-        image: gcr.io/google_containers/defaultbackend:1.4
-        livenessProbe:
-          httpGet:
-            path: /healthz
-            port: 8080
-            scheme: HTTP
-          initialDelaySeconds: 30
-          timeoutSeconds: 5
-        ports:
-        - containerPort: 8080
-        resources:
-          limits:
-            cpu: 10m
-            memory: 20Mi
-          requests:
-            cpu: 10m
-            memory: 20Mi
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: default-http-backend
-  namespace: default
-  labels:
-    k8s-app: default-http-backend
-spec:
-  ports:
-  - port: 80
-    targetPort: 8080
-  selector:
-    k8s-app: default-http-backend

docs/examples/customization/external-auth-headers/deploy/nginx-ingress-controller.yaml

@@ -1,33 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: Deployment
-metadata:
-  name: nginx-ingress-controller
-  labels:
-    k8s-app: nginx-ingress-controller
-  namespace: kube-system
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        k8s-app: nginx-ingress-controller
-    spec:
-      terminationGracePeriodSeconds: 60
-      containers:
-      - image: gcr.io/google_containers/nginx-ingress-controller:0.9.0-beta.2
-        name: nginx-ingress-controller
-        ports:
-        - containerPort: 80
-          hostPort: 80
-        env:
-          - name: POD_NAME
-            valueFrom:
-              fieldRef:
-                fieldPath: metadata.name
-          - name: POD_NAMESPACE
-            valueFrom:
-              fieldRef:
-                fieldPath: metadata.namespace
-        args:
-        - /nginx-ingress-controller
-        - --default-backend-service=$(POD_NAMESPACE)/default-http-backend