zabbix: removed ethernet graphs

roles/os_zabbix/vars/template_os_linux.yml

@@ -304,15 +304,3 @@ g_template_os_linux:
     description: 'CPU is less than 10% idle'
     dependencies:
     - 'CPU idle less than 5% on {HOST.NAME}'
-
-  zgraphprototypes:
-  - name: Network Interface Usage
-    width: 1000
-    height: 400
-    graph_items:
-    - item_name: "Bytes per second IN on network interface {#OSO_NET_INTERFACE}"
-      item_type: prototype
-      color: red
-    - item_name: "Bytes per second OUT on network interface {#OSO_NET_INTERFACE}"
-      item_type: prototype
-      color: blue