Remove `checked` variants of u32 MASM instructions #4182

Job	Run time
Clippy	43s
rustfmt	13s
Check Rust stable on ubuntu with --all-targets --no-default-features	51s
no-std (stable, wasm32-unknown-unknown)	1m 13s
Check Rust stable on ubuntu with --all-targets	1m 1s
no-std (nightly, wasm32-unknown-unknown)	1m 12s
Test Rust stable on ubuntu with --profile test-release	8m 31s
Check Rust stable on ubuntu with --all-targets --all-features	1m 7s
Test Rust nightly on windows-2022	0s
Check Rust nightly on ubuntu with --all-targets --no-default-features	1m 31s
Test Rust stable on ubuntu with --profile test-release --doc	4m 54s
Check Rust nightly on ubuntu with --all-targets	1m 5s
Test Rust nightly on ubuntu with --profile test-release	10m 37s
Check Rust nightly on ubuntu with --all-targets --all-features	1m 22s
Test Rust nightly on ubuntu with --profile test-release --doc	4m 58s
	39m 18s

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