working_copy: stop suppressing a warning that doesn't happen
We mutate the `new_file_state` variable on line 513 regardless of
platform these days, so we don't need to suppress the warning on Unix.
@@ -454,7 +454,6 @@ impl TreeState {
return Ok(());
}
let metadata = disk_path.symlink_metadata().unwrap();
- #[cfg_attr(unix, allow(unused_mut))]
let mut new_file_state = file_state(&metadata);
match maybe_current_file_state {
None => {
