md5

Remove `crypto` tags #1136

Job	Run time
set-msrv / set-msrv	4s
minimal-versions / minimal-versions	47s
test (stable)	42s
test (1.85.0)	44s
build (stable, loongarch64-unknown-linux-gnu)	14s
build (1.85.0, thumbv7em-none-eabi)	29s
build (stable, thumbv7em-none-eabi)	29s
build (1.85.0, loongarch64-unknown-linux-gnu)	29s
build (1.85.0, wasm32-unknown-unknown)	29s
build (stable, wasm32-unknown-unknown)	27s
	4m 54s

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