tai64

cms: remove unused transitive `pem` feature activation (#1565) #2187

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 8s
build (1.65.0, wasm32-unknown-unknown)	1m 10s
build (stable, thumbv7em-none-eabi)	13s
build (stable, wasm32-unknown-unknown)	14s
test (1.65.0)	1m 3s
test (stable)	12s
minimal-versions / minimal-versions	23s
	4m 23s

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