clean up unused methods from the hare oracle (#6682) #22589

Job	Run time
filter-changes	8s
coverage	21m 10s
quicktests	1m 48s
build (ubuntu-22.04)	58s
build (ubuntu-latest-arm-8-cores)	3m 6s
unittests (ubuntu-22.04)	28m 20s
build (macos-13)	3m 32s
unittests (ubuntu-latest-arm-8-cores)	29m 38s
lint	3m 0s
build (self-hosted, macOS, ARM64, go-spacemesh)	28s
unittests (self-hosted, macOS, ARM64, go-spacemesh)	23m 53s
build (windows-2022)	7m 16s
unittests (windows-2022)	40m 42s
ci-status	3s
	2h 44m 2s

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