remove undefined sort param kubernetes_virtlet_hosts

Change-Id: I2ee675fbc02ca6562f17e35acf2ec4339c16f246
diff --git a/metadata/service/master/cluster.yml b/metadata/service/master/cluster.yml
index 1665afa..1e38d03 100644
--- a/metadata/service/master/cluster.yml
+++ b/metadata/service/master/cluster.yml
@@ -71,7 +71,6 @@
           creates: deployment
         virtlet:
           enabled: False
-          hosts: ${_param:kubernetes_virtlet_hosts}
           namespace: kube-system
           image: Mirantis/virtlet:latest
       token: