repotests

Remove v8 from repotests #199

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Run time

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Job	Run time
jvm-testing (ubuntu-latest, 17)	1h 6m 28s
jvm-testing (ubuntu-latest, 19)	59m 31s
jvm-testing (ubuntu-latest, 20)	1h 12m 56s
jvm-testing (ubuntu-latest, 21)	37m 39s
jvm-testing (macos-latest, 17)	48m 47s
jvm-testing (macos-latest, 19)	6h 0m 19s
jvm-testing (macos-latest, 20)	46m 31s
jvm-testing (macos-latest, 21)	46m 4s
jvm-testing (windows-latest, 17)	3m 28s
jvm-testing (windows-latest, 19)	2m 49s
jvm-testing (windows-latest, 20)	3m 6s
jvm-testing (windows-latest, 21)	3m 20s
	12h 30m 58s