Rust

remove `Transformed` #48

Job	Run time
cargo check	2m 13s
cargo test (win64)	38m 43s
build with wasm-pack	1m 52s
cargo test (mac)	18m 8s
Verify MSRV	6m 22s
Verify Vendored Code	48s
Check cargo fmt	35s
cargo test (amd64)	8m 36s
cargo test doc (amd64)	9m 17s
clippy	4m 4s
cargo test datafusion-cli (amd64)	2m 55s
cargo doc	3m 5s
cargo test hash collisions (amd64)	8m 23s
cargo examples (amd64)	2m 1s
cargo test pyarrow (amd64)	2m 13s
Run sqllogictest with Postgres runner	2m 52s
verify benchmark results (amd64)	9m 34s
check Cargo.toml formatting	1m 16s
check configs.md is up-to-date	2m 14s
	2h 5m 11s

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