Remove debug message about pruning active leaves (#6440) #5810

Job	Run time
preflight / preflight	11s
preflight / ci-versions	59s
test-frame-ui	45s
test-full-crypto-feature	43s
cargo-check-all-crate-macos	1s
cargo-check-benches	0s
cargo-check-each-crate (1)	43s
test-node-metrics	44s
cargo-check-each-crate (2)	43s
cargo-check-each-crate (3)	42s
cargo-check-each-crate (4)	41s
cargo-check-each-crate (5)	43s
cargo-check-each-crate (6)	42s
cargo-check-each-crate (7)	42s
node-bench-regression-guard	5s
test-frame-examples-compile-to-wasm	1s
check-tracing	1s
test-deterministic-wasm	1s
check-metadata-hash	1s
All test misc tests passed	1s
	8m 29s

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