Rust

remove core/po #1661

Job	Run time
Check cargo fmt	41s
Check License Header	2m 16s
build with wasm-pack	3m 39s
cargo test (macos-aarch64)	3m 32s
linux build test	2m 40s
Verify MSRV (Min Supported Rust Version)	7m 35s
Verify Vendored Code	54s
check Cargo.toml formatting	0s
clippy	0s
check configs.md and ***_functions.md is up-to-date	0s
cargo check datafusion	0s
cargo check functions	0s
cargo check no default features	0s
cargo doc	0s
cargo test (amd64)	0s
cargo test datafusion-cli (amd64)	0s
cargo test doc (amd64)	0s
cargo examples (amd64)	0s
Run sqllogictest with Postgres runner	0s
cargo test pyarrow (amd64)	0s
verify benchmark results (amd64)	0s
	21m 17s

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