Rust

remove unused exports #1275

Job	Run time
clippy (stable)	1m 41s
test (stable, ubuntu-latest)	56s
clippy (beta)	1m 34s
features (stable, ubuntu-latest)	6m 4s
test (stable, macos-latest)	56s
clippy (nightly)	1m 31s
Release x86_64-unknown-linux-gnu	1m 23s
test (stable, windows-latest)	2m 20s
features (stable, macos-latest)	5m 32s
Release aarch64-unknown-linux-gnu	1m 35s
test (beta, ubuntu-latest)	1m 7s
features (stable, windows-latest)	11m 36s
rustfmt	11s
Release armv7-unknown-linux-gnueabihf	1m 35s
features (beta, ubuntu-latest)	6m 40s
test (beta, macos-latest)	58s
Release arm-unknown-linux-gnueabihf	1m 35s
features (beta, macos-latest)	5m 42s
test (beta, windows-latest)	2m 48s
Release riscv64gc-unknown-linux-gnu	1m 33s
features (beta, windows-latest)	11m 8s
test (nightly, ubuntu-latest)	54s
Release wasm32-unknown-unknown	54s
test (nightly, macos-latest)	56s
Release x86_64-apple-darwin	1m 10s
test (nightly, windows-latest)	2m 17s
Release aarch64-apple-darwin	1m 7s
Release x86_64-pc-windows-msvc	2m 55s
Release aarch64-pc-windows-msvc	4m 20s
	1h 22m 58s

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