Rust

Remove unnecessary unsafe block in example #7454

Job	Run time
Unit + Doc Tests	1m 9s
Integration Test (x86_64 Windows)	3m 17s
Build (feature permutations)	4m 17s
Integration Test (x86_64)	2m 16s
Integration Test (IA-32)	3m 52s
Integration Test (AArch64)	1m 37s
Build (uefi-raw MSRV)	34s
Build (stable MSRV)	37s
Nightly (build, test, doc)	2m 11s
Unit + Doc Tests (Miri)	1m 19s
Build Standard Binary (nightly)	26s
Test Coverage	42s
	22m 17s

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