remove duplicate nic-param call in fsn init

howto/ganeti.md

@@ -986,7 +986,7 @@ of the first Ganeti node when the `gnt-fsn` cluster was setup:
         --vg-name vg_ganeti \
         --secondary-ip 172.30.135.1 \
         --enabled-hypervisors kvm \
-        --nic-parameters link=br0,vlan=4000 \
+        --nic-parameters mode=openvswitch,link=br0,vlan=4000 \
         --mac-prefix 00:66:37 \
         --no-ssh-init \
         --no-etc-hosts \
@@ -1009,7 +1009,6 @@ Then the following extra configuration was performed:
     gnt-cluster modify -H kvm:migration_bandwidth=950
     gnt-cluster modify -H kvm:migration_downtime=500
     gnt-cluster modify -D drbd:c-plan-ahead=0,disk-custom='--c-plan-ahead 0'
-    gnt-cluster modify --nic-parameters mode=openvswitch,link=br0,vlan=4000
     gnt-cluster modify --uid-pool 4000-4019
 
 The [network configuration](#network-configuration) (below) must also be performed for the