refactor: move acos() to function crate #23665

Job	Run time
cargo test (macos)	23m 21s
cargo test (win64)	53m 13s
cargo check	10m 1s
build with wasm-pack	2m 27s
Check cargo fmt	1m 50s
cargo test (macos-aarch64)	13m 12s
Verify MSRV (Min Supported Rust Version)	7m 8s
Verify Vendored Code	49s
cargo test doc (amd64)	13m 35s
cargo examples (amd64)	10m 45s
cargo test (amd64)	11m 58s
cargo test datafusion-cli (amd64)	4m 4s
check Cargo.toml formatting	3m 43s
clippy	6m 35s
cargo test hash collisions (amd64)	11m 9s
check configs.md is up-to-date	3m 2s
cargo doc	4m 46s
Run sqllogictest with Postgres runner	3m 28s
cargo test pyarrow (amd64)	2m 37s
verify benchmark results (amd64)	10m 33s
	3h 18m 16s

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