Fix sbt load warnings by excluding unused lint keys (#3029) #6041

Job	Run time
Java 21 Extra Tests (including all tests that need Java 9+)	17m 9s
Check / Tests (2.13.x)	57m 22s
Pekko Classic Remoting Tests (cluster/test distributed-data/test cluster-tools/test cluster-metri...	36s
Check / Code Style	1m 37s
Check / Tests (3.3.x)	56m 40s
Check / Tests (2.12.x)	55m 24s
	3h 8m 48s

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