remove the defunct comment

crates/uv-interpreter/src/python_environment.rs

@@ -89,9 +89,6 @@ impl PythonEnvironment {
  }
 
  /// Returns an iterator over the `site-packages` directories inside a virtual environment.
- ///
- /// In most cases, `purelib` and `platlib` will be the same, and so the iterator will contain
- /// a single element; however, in some distributions, they may be different.
  pub fn site_packages(&self) -> impl Iterator<Item = &Path> {
  let mut site_packages = Vec::new();
  site_packages.push(self.interpreter.purelib());