Remove obsolete network interface features

...grid5000/sites/lyon/clusters/hercule/nodes/hercule-1.json

...grid5000/sites/lyon/clusters/hercule/nodes/hercule-2.json

...grid5000/sites/lyon/clusters/hercule/nodes/hercule-3.json

...grid5000/sites/lyon/clusters/hercule/nodes/hercule-4.json

...0/sites/lyon/clusters/sagittaire/nodes/sagittaire-23.json

...0/sites/lyon/clusters/sagittaire/nodes/sagittaire-45.json

.../grid5000/sites/lyon/clusters/taurus/nodes/taurus-15.json

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

data/grid5000/sites/lyon/clusters/taurus/nodes/taurus-9.json

...d5000/sites/nancy/clusters/graphene/nodes/graphene-1.json

...5000/sites/nancy/clusters/graphene/nodes/graphene-10.json

...000/sites/nancy/clusters/graphene/nodes/graphene-100.json

...000/sites/nancy/clusters/graphene/nodes/graphene-101.json

...000/sites/nancy/clusters/graphene/nodes/graphene-102.json

...000/sites/nancy/clusters/graphene/nodes/graphene-103.json

...000/sites/nancy/clusters/graphene/nodes/graphene-104.json

...000/sites/nancy/clusters/graphene/nodes/graphene-105.json

...000/sites/nancy/clusters/graphene/nodes/graphene-106.json

...000/sites/nancy/clusters/graphene/nodes/graphene-107.json

...000/sites/nancy/clusters/graphene/nodes/graphene-108.json