Remove `chrono` dependency #561

Job	Run time
clippy	2m 22s
check	38s
test (ubuntu-latest, stable, sudo apt-get install libpcsclite-dev)	1m 42s
test (windows-latest, stable, true)	3m 18s
test (macos-latest, stable, true)	2m 4s
test (ubuntu-latest, 1.65.0, sudo apt-get install libpcsclite-dev)	3m 31s
test (windows-latest, 1.65.0, true)	4m 23s
test (macos-latest, 1.65.0, true)	4m 20s
rustfmt	8s
	22m 26s

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