Remove [[some!]] unused variables #1326

Job	Run time
Detect File Changes	13s
Self Hosted (cpu, gt)	40m 41s
Self Hosted (gpu, gt)	1h 12m 32s
Github (ubuntu, mpi, debug, true)	1h 1m 12s
Self Hosted (gpu, frontier)	1m 22s
Github (ubuntu, mpi, debug, false)	54m 25s
Github (ubuntu, mpi, no-debug, true)	1h 8m 32s
Github (ubuntu, mpi, no-debug, false)	1h 30m 20s
Github (macos, mpi, debug, false)	26m 32s
Github (macos, mpi, no-debug, false)	33m 54s
Github (ubuntu, no-mpi, no-debug, false)	29m 37s
	7h 59m 20s

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