Drop Home Assistant per-entity staleness check (delegate to integration) #691

Job	Run time
lint	14s
validate (3.11)	50s
validate (3.12)	43s
validate (3.10)	54s
validate (3.13)	48s
build-addon (linux/amd64, addon-linux-amd64) / build	49s
build (linux/arm64, base-linux-arm64) / build	34s
build (linux/arm/v7, base-linux-arm-v7) / build	35s
build (linux/amd64, base-linux-amd64) / build	40s
build-addon (linux/arm64, addon-linux-arm64) / build	55s
merge / merge	15s
merge-addon / merge	15s
	7m 32s

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