Remove fabric legacy CLI #26698

Job	Run time
build-packages / build-packages (lightning)	23s
build-packages / build-packages (fabric)	18s
build-packages / build-packages (pytorch)	27s
build-packages / merge-artifacts	4s
install-pkg (ubuntu-22.04, fabric, 3.9)	1m 40s
install-pkg (ubuntu-22.04, fabric, 3.11)	1m 40s
install-pkg (ubuntu-22.04, pytorch, 3.9)	1m 47s
install-pkg (ubuntu-22.04, pytorch, 3.11)	1m 46s
install-pkg (ubuntu-22.04, lightning, 3.9)	1m 51s
install-pkg (ubuntu-22.04, lightning, 3.11)	2m 3s
install-pkg (ubuntu-22.04, notset, 3.9)	1m 49s
install-pkg (ubuntu-22.04, notset, 3.11)	1m 45s
install-pkg (macOS-14, fabric, 3.9)	1m 4s
install-pkg (macOS-14, fabric, 3.11)	30s
install-pkg (macOS-14, pytorch, 3.9)	1m 10s
install-pkg (macOS-14, pytorch, 3.11)	41s
install-pkg (macOS-14, lightning, 3.9)	1m 10s
install-pkg (macOS-14, lightning, 3.11)	47s
install-pkg (macOS-14, notset, 3.9)	1m 1s
install-pkg (macOS-14, notset, 3.11)	57s
install-pkg (windows-2022, fabric, 3.9)	2m 38s
install-pkg (windows-2022, fabric, 3.11)	2m 27s
install-pkg (windows-2022, pytorch, 3.9)	2m 39s
install-pkg (windows-2022, pytorch, 3.11)	2m 30s
install-pkg (windows-2022, lightning, 3.9)	2m 10s
install-pkg (windows-2022, lightning, 3.11)	3m 17s
install-pkg (windows-2022, notset, 3.9)	3m 16s
install-pkg (windows-2022, notset, 3.11)	2m 45s
	44m 35s

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