chore: remove flaky test debug logs from rln tests #6357

Job	Run time
changes	7s
test-ubuntu-22.04	36m 18s
build-ubuntu-22.04	27m 37s
test-macos-13	34m 17s
build-macos-13	31m 26s
build-docker-image / docker-build-ubuntu-22.04	5m 32s
js-waku-node / node	16m 47s
js-waku-node-optional / node	6m 54s
nwaku-nwaku-interop-tests / test-pr / tests	4m 20s
Lint	27s
	2h 43m 45s

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