Removing deprecated chunk storage flag (#5940) #8951

Job	Run time
CodeQL	6m 44s
lint	18m 14s
build	3m 44s
test	18m 32s
integration (requires_docker)	5m 42s
integration-configs-db	2m 3s
integration (integration_alertmanager)	3m 52s
integration (integration_backward_compatibility)	8m 47s
integration (integration_memberlist)	7m 19s
integration (integration_querier)	11m 41s
integration (integration_ruler)	4m 7s
integration (integration_query_fuzz)	2m 27s
deploy_website	51s
deploy	3m 20s
	1h 37m 23s

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