remove designate classes from prx01 in pike-dpdk generated model

Change-Id: Ia5f2c297e0c0802c3c850af1973f8130b91d14ed
diff --git a/tcp_tests/templates/virtual-pike-ovs-dpdk/_context-environment.yaml b/tcp_tests/templates/virtual-pike-ovs-dpdk/_context-environment.yaml
index 58ea06e..a5640d1 100644
--- a/tcp_tests/templates/virtual-pike-ovs-dpdk/_context-environment.yaml
+++ b/tcp_tests/templates/virtual-pike-ovs-dpdk/_context-environment.yaml
@@ -116,7 +116,6 @@
       reclass_storage_name: openstack_proxy_node01
       roles:
       - openstack_proxy
-      - features_designate_bind9_proxy
       - linux_system_codename_xenial
       interfaces:
         ens3: