remove unused code

compiler/load_internal/src/file.rs

@@ -3641,34 +3641,6 @@ fn run_solve<'a>(
     }
 }
 
-/// Get the project root (relative to closest Cargo.lock file)
-/// ```rust
-/// match project_root::get_project_root() {
-///     Ok(p) => println!("Current project root is {:?}", p),
-///     Err(e) => println!("Error obtaining project root {:?}", e)
-/// };
-/// ```
-pub fn get_project_root() -> io::Result<PathBuf> {
-    use std::fs::read_dir;
-    use std::io::ErrorKind;
-
-    let path = env::current_dir()?;
-    let path_ancestors = path.as_path().ancestors();
-
-    for p in path_ancestors {
-        let has_cargo = read_dir(p)?
-            .into_iter()
-            .any(|p| p.unwrap().file_name() == *"Cargo.lock");
-        if has_cargo {
-            return Ok(PathBuf::from(p));
-        }
-    }
-    Err(io::Error::new(
-        ErrorKind::NotFound,
-        "Ran out of places to find Cargo.toml",
-    ))
-}
-
 fn unspace<'a, T: Copy>(arena: &'a Bump, items: &[Loc<Spaced<'a, T>>]) -> &'a [Loc<T>] {
     bumpalo::collections::Vec::from_iter_in(
         items