Remove `checked` variants of u32 MASM instructions #4160

Job	Run time
rustfmt	16s
Clippy	1m 5s
Check Rust stable on ubuntu with --all-targets --no-default-features	1m 15s
no-std (stable, wasm32-unknown-unknown)	1m 27s
Check Rust stable on ubuntu with --all-targets	1m 11s
no-std (nightly, wasm32-unknown-unknown)	1m 21s
Test Rust stable on ubuntu with --profile test-release	9m 50s
Check Rust stable on ubuntu with --all-targets --all-features	1m 20s
Test Rust stable on ubuntu with --profile test-release --doc	5m 48s
Test Rust nightly on windows-2022	0s
Check Rust nightly on ubuntu with --all-targets --no-default-features	1m 19s
Test Rust nightly on ubuntu with --profile test-release	9m 46s
Check Rust nightly on ubuntu with --all-targets	1m 12s
Test Rust nightly on ubuntu with --profile test-release --doc	4m 21s
Check Rust nightly on ubuntu with --all-targets --all-features	1m 20s
	41m 31s

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