Rust

Revert "Improve Union Equivalence Propagation (#11506)" #63

Job	Run time
cargo check	3m 42s
Check cargo fmt	41s
build with wasm-pack	3m 51s
cargo test (macos)	10m 45s
cargo test (macos-aarch64)	10m 23s
Verify MSRV (Min Supported Rust Version)	6m 33s
Verify Vendored Code	51s
cargo test (win64)	40m 19s
check Cargo.toml formatting	3m 12s
check configs.md is up-to-date	2m 58s
clippy	3m 52s
cargo test hash collisions (amd64)	14m 32s
cargo doc	4m 14s
cargo test (amd64)	9m 54s
cargo test datafusion-cli (amd64)	3m 41s
cargo test doc (amd64)	13m 59s
Run sqllogictest with Postgres runner	3m 34s
cargo test pyarrow (amd64)	3m 0s
cargo examples (amd64)	12m 44s
verify benchmark results (amd64)	12m 4s
	2h 44m 49s

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