clean up #105

Job	Run time
cross-compile-ios (macos-latest, 1.70.0, aarch64-apple-ios)	19s
test (ubuntu-latest, 1.70.0)	13s
test (ubuntu-latest, stable)	6s
cross-compile (ubuntu-latest, 1.70.0, aarch64-linux-android)	13s
test (ubuntu-latest, beta)	11s
cross-compile (ubuntu-latest, 1.70.0, i686-pc-windows-gnu)	13s
test (ubuntu-latest, nightly)	13s
cross-compile (ubuntu-latest, 1.70.0, i686-unknown-freebsd)	15s
test (macos-latest, 1.70.0)	19s
cross-compile (ubuntu-latest, 1.70.0, i686-unknown-linux-gnu)	19s
test (macos-latest, stable)	11s
cross-compile (ubuntu-latest, 1.70.0, wasm32-unknown-unknown)	15s
test (macos-latest, beta)	17s
test (macos-latest, nightly)	16s
test (windows-latest, 1.70.0)	39s
test (windows-latest, stable)	59s
cross-compile (ubuntu-latest, 1.70.0, x86_64-apple-darwin)	17s
cross-compile (ubuntu-latest, 1.70.0, x86_64-unknown-redox)	14s
test (windows-latest, beta)	44s
test (windows-latest, nightly)	34s
	6m 47s

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