fix: clean up the code. #10

Job	Run time
test (ubuntu-latest, stable, x64)	28s
test_32bit (ubuntu-latest, stable, ia32)	25s
test (ubuntu-latest, stable, arm)	28s
test (ubuntu-latest, stable, arm64)	26s
test_32bit (ubuntu-latest, stable, arm)	26s
test (ubuntu-latest, beta, x64)	26s
test (ubuntu-latest, beta, arm)	26s
test (ubuntu-latest, beta, arm64)	25s
test (ubuntu-latest, dev, x64)	23s
test (ubuntu-latest, dev, arm)	23s
test (ubuntu-latest, dev, arm64)	24s
test (macos-latest, stable, x64)	26s
test (macos-latest, stable, arm)	25s
test (macos-latest, stable, arm64)	38s
test (macos-latest, beta, x64)	28s
test (macos-latest, beta, arm)	28s
test (macos-latest, beta, arm64)	27s
test (macos-latest, dev, x64)	46s
test (macos-latest, dev, arm)	26s
test (macos-latest, dev, arm64)	24s
test (windows-latest, stable, x64)	56s
test (windows-latest, stable, arm)	49s
test (windows-latest, stable, arm64)	43s
test (windows-latest, beta, x64)	1m 1s
test (windows-latest, beta, arm)	46s
test (windows-latest, beta, arm64)	42s
test (windows-latest, dev, x64)	41s
test (windows-latest, dev, arm)	47s
test (windows-latest, dev, arm64)	42s
	16m 15s

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