Merge bitcoin/bitcoin#30942: test: Remove dead code from interface_zm… #3483

Job	Run time
macOS 14 native, arm64, no depends, sqlite only, gui	17m 14s
test each commit	0s
ASan + LSan + UBSan + integer, no depends, USDT	50m 36s
Win64 native, VS 2022	1h 23m 27s
	2h 31m 17s

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