Remove fabric legacy CLI #14709

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.1)	20m 46s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	15m 26s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	14m 47s
pl-cpu (macOS-14, lightning, 3.11, 2.2.2)	20m 50s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.2.2)	14m 3s
pl-cpu (windows-2022, lightning, 3.11, 2.2.2)	18m 34s
pl-cpu (macOS-14, lightning, 3.11, 2.3)	20m 52s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	14m 39s
pl-cpu (windows-2022, lightning, 3.11, 2.3)	16m 4s
pl-cpu (macOS-14, lightning, 3.12.7, 2.4.1)	24m 5s
pl-cpu (ubuntu-22.04, lightning, 3.12.7, 2.4.1)	20m 25s
pl-cpu (windows-2022, lightning, 3.12.7, 2.4.1)	19m 43s
pl-cpu (macOS-14, lightning, 3.12.7, 2.5.1)	23m 18s
pl-cpu (ubuntu-22.04, lightning, 3.12.7, 2.5.1)	22m 45s
pl-cpu (windows-2022, lightning, 3.12.7, 2.5.1)	20m 45s
pl-cpu (macOS-14, pytorch, 3.12.7, 2.5.1)	22m 30s
pl-cpu (ubuntu-22.04, pytorch, 3.12.7, 2.5.1)	20m 53s
pl-cpu (windows-2022, pytorch, 3.12.7, 2.5.1)	19m 53s
pl-cpu (macOS-14, lightning, 3.9, 2.1, oldest)	20m 53s
pl-cpu (ubuntu-20.04, lightning, 3.9, 2.1, oldest)	12m 32s
pl-cpu (windows-2022, lightning, 3.9, 2.1, oldest)	14m 44s
pl-cpu (macOS-14, pytorch, 3.9, 2.1)	21m 28s
pl-cpu (ubuntu-20.04, pytorch, 3.9, 2.1)	15m 28s
pl-cpu (windows-2022, pytorch, 3.9, 2.1)	16m 32s
	7h 31m 55s

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