[lyon] Remove rate on nova.yml for unmounted interfaces

data/grid5000/sites/lyon/clusters/nova/nodes/nova-1.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-10.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-11.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-12.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-13.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-14.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-15.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-16.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-17.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-18.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-19.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-2.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-20.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-21.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-22.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-23.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-3.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-4.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-5.json

data/grid5000/sites/lyon/clusters/nova/nodes/nova-6.json