ci: remove obsolete cancel job, use concurrency group names from V CI… #922

Job	Run time
code-formatting	29s
ubuntu-latest-bootstrap	4m 37s
ubuntu-latest-build	2m 8s
ubuntu-latest-vab-can-live-anywhere	1m 54s
v-compiles-os-android	1m 7s
windows-latest-build	2m 14s
	12m 29s

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