review: remove httpbin leftover.

Signed-off-by: Piotr Sikora <[email protected]>

Author: PiotrSikora

examples/grpc_auth_random/envoy.yaml

@@ -53,19 +53,6 @@ static_resources:
                   typed_config:
                     "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
   clusters:
-    - name: httpbin
-      connect_timeout: 5s
-      type: STRICT_DNS
-      lb_policy: ROUND_ROBIN
-      load_assignment:
-        cluster_name: httpbin
-        endpoints:
-          - lb_endpoints:
-              - endpoint:
-                  address:
-                    socket_address:
-                      address: httpbin
-                      port_value: 8080
     - name: grpcbin
       connect_timeout: 5s
       type: STRICT_DNS