Remove warnings by cleaning up the `Cargo.toml` #11595

Job	Run time
preflight / preflight	44s
preflight / ci-versions	1m 14s
cargo-check-benches (master)	20m 45s
cargo-check-benches (current)	22m 51s
cargo-check-all-crate-macos	12m 22s
test-frame-ui	27m 14s
cargo-check-each-crate (1)	20m 18s
cargo-check-each-crate (2)	19m 21s
test-full-crypto-feature	2m 30s
test-node-metrics	9m 31s
cargo-check-each-crate (3)	6m 37s
cargo-check-each-crate (4)	18m 18s
cargo-check-each-crate (5)	25m 9s
cargo-check-each-crate (6)	13m 18s
cargo-check-each-crate (7)	26m 13s
test-frame-examples-compile-to-wasm	2m 57s
test-deterministic-wasm	7m 29s
check-tracing	2m 15s
check-metadata-hash	6m 42s
node-bench-regression-guard	13s
All test misc tests passed	1s
	4h 6m 2s

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