delete upstream healthcheck annotation

docs/examples/customization/custom-upstream-check/README.md

@@ -1,44 +0,0 @@
-# Custom Upstream server checks
-
-This example shows how is possible to create a custom configuration for a particular upstream associated with an Ingress rule.
-
-```
-echo "
-apiVersion: extensions/v1beta1
-kind: Ingress
-metadata:
-  name: http-svc
-  annotations:
-    nginx.ingress.kubernetes.io/upstream-fail-timeout: "30"
-spec:
-  rules:
-  - host: foo.bar.com
-    http:
-      paths:
-      - path: /
-        backend:
-          serviceName: http-svc
-          servicePort: 80
-" | kubectl create -f -
-```
-
-Check the annotation is present in the Ingress rule:
-```
-kubectl get ingress http-svc -o yaml
-```
-
-Check the NGINX configuration is updated using kubectl or the status page:
-
-```
-$ kubectl exec nginx-ingress-controller-v1ppm cat /etc/nginx/nginx.conf
-```
-
-```
-....
-    upstream default-http-svc-x-80 {
-        least_conn;
-        server 10.2.92.2:8080 max_fails=5 fail_timeout=30;
-
-    }
-....
-```