fixup! fixup! fixup! fixup! Apply clippy fixes #403

Job	Run time
Check License Header	2m 23s
cargo check	7m 41s
cargo test (macos)	17m 40s
cargo test (macos-aarch64)	14m 16s
build with wasm-pack	3m 4s
Verify Vendored Code	44s
cargo test (win64)	1h 14m 50s
Check cargo fmt	36s
Verify MSRV (Min Supported Rust Version)	8m 58s
cargo test (amd64)	12m 7s
cargo examples (amd64)	14m 9s
cargo test datafusion-cli (amd64)	4m 25s
check Cargo.toml formatting	2m 48s
clippy	4m 58s
check configs.md and ***_functions.md is up-to-date	3m 47s
cargo test hash collisions (amd64)	28m 6s
cargo doc	4m 27s
cargo test doc (amd64)	17m 28s
cargo test pyarrow (amd64)	3m 8s
Run sqllogictest with Postgres runner	4m 17s
verify benchmark results (amd64)	13m 38s
	4h 3m 30s

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