Remove SingleUseSandbox #512

Job	Run time
spell check with typos	4s
docs-pr	4s
build-on-windows (windows-debug)	55s
build-on-linux (linux-kvm-debug)	1m 12s
build-on-windows (windows-release)	38s
build-on-linux (linux-kvm-release)	1m 15s
build-on-linux (linux-hyperv-debug)	1m 15s
build-on-linux (linux-hyperv-release)	1m 23s
fuzzing / fuzz	9m 49s
rust / build (hyperv, amd, debug)	17m 23s
rust / build (hyperv, amd, release)	22m 43s
rust / build (hyperv, intel, debug)	17m 22s
rust / build (hyperv, intel, release)	22m 24s
rust / build (mshv, amd, debug)	11m 55s
rust / build (mshv, amd, release)	15m 25s
rust / build (mshv, intel, debug)	10m 32s
rust / build (mshv, intel, release)	14m 36s
rust / build (kvm, amd, debug)	12m 12s
rust / build (kvm, amd, release)	15m 50s
rust / build (kvm, intel, debug)	10m 54s
rust / build (kvm, intel, release)	15m 3s
	3h 22m 54s

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