message: Remove FrozenStringValue::as_starlark_str
  Summary: Not needed.
diff: @@ -139,13 +139,9 @@ impl FrozenStringValue {
  FrozenValueTyped::new(value).map(FrozenStringValue)
  }
  - pub(crate) fn as_starlark_str(self) -> &'static StarlarkStr {
  - self.0.as_ref()
  - }
  -
  /// Get a string.
  pub fn as_str(self) -> &'static str {
  - self.as_starlark_str().as_str()
  + self.0.as_ref().as_str()
  }
  /// Get self along with the hash.
  