Rust

Minor: remove string copy from Column::from_qualified_name #3382

Job	Run time
cargo check	7m 46s
Check cargo fmt	39s
build with wasm-pack	2m 19s
cargo test (macos)	10m 5s
cargo test (macos-aarch64)	12m 18s
Verify MSRV (Min Supported Rust Version)	7m 9s
Verify Vendored Code	54s
cargo test (win64)	35m 35s
clippy	5m 20s
cargo test (amd64)	9m 13s
cargo test datafusion-cli (amd64)	3m 40s
cargo doc	3m 37s
cargo test doc (amd64)	12m 30s
cargo examples (amd64)	11m 26s
Run sqllogictest with Postgres runner	3m 27s
cargo test pyarrow (amd64)	2m 39s
verify benchmark results (amd64)	10m 29s
check Cargo.toml formatting	2m 54s
check configs.md is up-to-date	2m 44s
cargo test hash collisions (amd64)	9m 10s
	2h 33m 54s

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