Clean up unused code in packet #1968

Job	Run time
lint	42s
cargo-deny (aarch64-apple-ios)	21s
cargo-deny (aarch64-linux-android)	20s
test (ubuntu-latest, stable)	1m 39s
cargo-deny (i686-pc-windows-gnu)	21s
test (ubuntu-latest, beta)	6m 4s
cargo-deny (i686-pc-windows-msvc)	21s
test (ubuntu-latest, 1.65.0)	2m 40s
cargo-deny (i686-unknown-linux-gnu)	21s
test (macos-latest, stable)	1m 6s
cargo-deny (wasm32-unknown-unknown)	25s
test (macos-latest, beta)	4m 42s
cargo-deny (x86_64-apple-darwin)	21s
test (macos-latest, 1.65.0)	1m 26s
cargo-deny (x86_64-apple-ios)	20s
test (windows-latest, stable)	3m 7s
cargo-deny (x86_64-pc-windows-gnu)	53s
test (windows-latest, beta)	12m 37s
cargo-deny (x86_64-pc-windows-msvc)	22s
test (windows-latest, 1.65.0)	10m 13s
cargo-deny (x86_64-unknown-linux-gnu)	20s
cargo-deny (x86_64-unknown-redox)	21s
	49m 2s

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