Revert "MTL-1561 Add GCP mode for supporting GCP NVME"

[rustydb]

Reverts #15

The change of sort -u to sort -h is breaking the sorting of the disks by size and the RAID is going to grab the wrong disks.

+ lsblk
NAME                MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
loop0                 7:0    0   4.7G  1 loop  /run/rootfsbase
loop1                 7:1    0   3.2G  0 loop
`-live-overlay-pool 254:0    0    32G  0 dm
loop2                 7:2    0    32G  0 loop
`-live-overlay-pool 254:0    0    32G  0 dm
sda                   8:0    0 447.1G  0 disk
|-sda1                8:1    0   476M  0 part
| `-md127             9:127  0 475.9M  0 raid1
|-sda2                8:2    0  22.8G  0 part
| `-md126             9:126  0  22.8G  0 raid1 /run/initramfs/live
|-sda3                8:3    0 139.7G  0 part
| `-md125             9:125  0 139.6G  0 raid1 /run/initramfs/overlayfs
`-sda4                8:4    0 139.7G  0 part
  `-md124             9:124  0 139.6G  0 raid1
sdb                   8:16   0   1.7T  0 disk
|-sdb1                8:17   0   476M  0 part
| `-md127             9:127  0 475.9M  0 raid1
|-sdb2                8:18   0  22.8G  0 part
| `-md126             9:126  0  22.8G  0 raid1 /run/initramfs/live
|-sdb3                8:19   0 139.7G  0 part
| `-md125             9:125  0 139.6G  0 raid1 /run/initramfs/overlayfs
`-sdb4                8:20   0 139.7G  0 part
  `-md124             9:124  0 139.6G  0 raid1
sdc                   8:32   0 447.1G  0 disk

Observe above that sdb is the larger, ephemeral disk. However it has been adopted as a RAID member.