chore: remove some length checks #701

Job	Run time
feature checks	24s
Test +nightly aarch64-unknown-linux-gnu	44s
docs	15s
Clippy	18s
Test +stable aarch64-unknown-linux-gnu	25s
fmt	11s
Test +1.64 aarch64-unknown-linux-gnu	35s
Fuzz	30s
Test +nightly i686-unknown-linux-gnu	35s
Miri (x86_64-unknown-linux-gnu)	1m 5s
Outdated	7s
Test +stable i686-unknown-linux-gnu	45s
Miri (x86_64-unknown-linux-gnu, -Fforce-generic)	1m 4s
Test +1.64 i686-unknown-linux-gnu	28s
Miri (aarch64-unknown-linux-gnu)	31s
Test +nightly x86_64-unknown-linux-gnu	25s
Miri (aarch64-unknown-linux-gnu, -Fforce-generic)	1m 10s
Test +stable x86_64-unknown-linux-gnu	16s
Test +1.64 x86_64-unknown-linux-gnu	20s
Test +nightly wasm32-wasip1	35s
Test +stable wasm32-wasip1	26s
	11m 9s

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