Remove global-rate-limit feature (#11851)

charts/ingress-nginx/tests/controller-configmap_test.yaml

@@ -16,16 +16,8 @@ tests:
   - it: should create a ConfigMap with templated values if `controller.config` contains templates
     set:
       controller.config:
-        global-rate-limit-memcached-host: "memcached.{{ .Release.Namespace }}.svc.kubernetes.local"
-        global-rate-limit-memcached-port: 11211
         use-gzip: true
     asserts:
-      - equal:
-          path: data.global-rate-limit-memcached-host
-          value: memcached.NAMESPACE.svc.kubernetes.local
-      - equal:
-          path: data.global-rate-limit-memcached-port
-          value: "11211"
       - equal:
           path: data.use-gzip
           value: "true"