[grele,yeti] Revert addition of IB interfaces

data/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-1.json

data/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-2.json

data/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-3.json

data/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-4.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-1.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-10.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-11.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-12.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-13.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-14.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-2.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-3.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-4.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-5.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-6.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-7.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-8.json

data/grid5000/sites/nancy/clusters/grele/nodes/grele-9.json

...t/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-1.yaml

...t/grid5000/sites/grenoble/clusters/yeti/nodes/yeti-2.yaml