Removes unnecessary #[allow(dead_code)] in tiered storage (#34320) #135

Job	Run time
test	0s
cargo-test-sbf (token/program)	5m 32s
check	0s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	11m 39s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 7s
cargo-test-sbf (token-upgrade/program)	6m 37s
cargo-test-sbf (feature-proposal/program)	7m 34s
cargo-test-sbf (governance/addin-mock/program, governance/program)	10m 32s
cargo-test-sbf (memo/program)	6m 32s
cargo-test-sbf (name-service/program)	5m 40s
cargo-test-sbf (stake-pool/program)	11m 8s
cargo-test-sbf (single-pool/program)	7m 33s
	1h 21m 54s

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