lxd-to-incus: Stop using LXD client package #995

Job	Run time
Documentation	6m 24s
System (1.20.x, cluster, dir)	11m 19s
Code	7m 13s
System (1.20.x, cluster, btrfs)	12m 34s
Client (1.20.x, ubuntu-latest)	23s
System (1.20.x, cluster, lvm)	12m 16s
Client (1.20.x, macos-latest)	32s
System (1.20.x, cluster, zfs)	12m 51s
Client (1.20.x, windows-latest)	1m 56s
System (1.20.x, cluster, ceph)	16m 22s
System (1.20.x, cluster, random)	11m 14s
System (1.20.x, standalone, dir)	21m 53s
System (1.20.x, standalone, btrfs)	21m 48s
System (1.20.x, standalone, lvm)	38m 58s
System (1.20.x, standalone, zfs)	42m 0s
System (1.20.x, standalone, ceph)	1h 14m 35s
System (1.20.x, standalone, random)	35m 20s
System (stable, cluster, dir)	10m 28s
System (stable, standalone, dir)	20m 56s
System (tip, cluster, dir)	12m 26s
System (tip, standalone, dir)	22m 28s
	6h 33m 56s

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