[lyon][hydra] remove uneeded second by_path

input/grid5000/sites/lyon/clusters/hydra/nodes/hydra-1.yaml

@@ -71,12 +71,10 @@ hydra-1:
   storage_devices:
     pci-0004:01:00.0-nvme-1:
       by_id: "/dev/disk/by-id/nvme-eui.36363530574136010025384e00000001"
-      by_path: "/dev/disk/by-path/pci-0004:01:00.0-nvme-1"
       model: SAMSUNG MZ1L2960HCJR-00A07
       size: 960197124096
       storage: SSD
     pci-0006:01:00.0-scsi-0:2:0:0:
-      by_path: "/dev/disk/by-path/pci-0006:01:00.0-scsi-0:2:0:0"
       firmware_version: 602Q
       model: SAMSUNG MZTL21T9
       size: 1920383410176