remove unused code (#4981)

roles/network_plugin/cilium/templates/cilium-ds.yml.j2

@@ -26,9 +26,7 @@ spec:
         prometheus.io/port: "9090"
 {% endif %}
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       serviceAccountName: cilium
       initContainers:
         - name: clean-cilium-state

roles/network_plugin/contiv/templates/contiv-api-proxy.yml.j2

@@ -16,9 +16,7 @@ spec:
       labels:
         k8s-app: contiv-api-proxy
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       # The API proxy must run in the host network namespace so that
       # it isn't governed by policy that would prevent it from working.
       hostNetwork: true

roles/network_plugin/contiv/templates/contiv-cleanup.yml.j2

@@ -15,9 +15,7 @@ spec:
       labels:
         k8s-app: contiv-cleanup
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
       hostPID: true

roles/network_plugin/contiv/templates/contiv-etcd-proxy.yml.j2

@@ -15,9 +15,7 @@ spec:
       labels:
         k8s-app: contiv-etcd-proxy
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
       hostPID: true

roles/network_plugin/contiv/templates/contiv-etcd.yml.j2

@@ -15,9 +15,7 @@ spec:
       labels:
         k8s-app: contiv-etcd
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
       hostPID: true

roles/network_plugin/contiv/templates/contiv-netmaster.yml.j2

@@ -16,9 +16,7 @@ spec:
       labels:
         k8s-app: contiv-netmaster
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       # The netmaster must run in the host network namespace so that
       # it isn't governed by policy that would prevent it from working.
       hostNetwork: true

roles/network_plugin/contiv/templates/contiv-netplugin.yml.j2

@@ -20,9 +20,7 @@ spec:
       labels:
         k8s-app: contiv-netplugin
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
       hostPID: true

roles/network_plugin/contiv/templates/contiv-ovs.yml.j2

@@ -17,9 +17,7 @@ spec:
       labels:
         k8s-app: contiv-ovs
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       hostNetwork: true
       dnsPolicy: ClusterFirstWithHostNet
       hostPID: true

roles/network_plugin/flannel/templates/cni-flannel.yml.j2

@@ -52,9 +52,7 @@ spec:
         tier: node
         k8s-app: flannel
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-node-critical
-{% endif %}
       serviceAccountName: flannel
       nodeSelector:
         beta.kubernetes.io/os: linux

roles/network_plugin/kube-router/templates/kube-router.yml.j2

@@ -61,9 +61,7 @@ spec:
         k8s-app: kube-router
         tier: node
     spec:
-{% if kube_version is version('v1.11.1', '>=') %}
       priorityClassName: system-cluster-critical
-{% endif %}
       serviceAccountName: kube-router
       containers:
       - name: kube-router

roles/network_plugin/weave/templates/weave-net.yml.j2

@@ -115,9 +115,7 @@ items:
           labels:
             name: weave-net
         spec:
-{% if kube_version is version('v1.11.1', '>=') %}
           priorityClassName: system-node-critical
-{% endif %}
           containers:
             - name: weave
               command: