Fix invalid macro_export usage

This fixes build failure with Rust 1.69+. According to [^1], "the only
valid argument is `#[macro_export(local_inner_macros)]` or no argument
(`#[macro_export]`)".

The check for invalid `#[macro_export]` arguments was added in
rust-lang/rust#107911 and first released in Rust 1.69.0.

[^1]: https://github.com/rust-lang/rust/blob/1.69.0/compiler/rustc_lint_defs/src/builtin.rs#L4129

Signed-off-by: Ruoyu Zhong <zhongruoyu@outlook.com>

src/lib.rs

@@ -142,7 +142,7 @@ pub async fn load_troy_file(world: &World, file_name: &str) -> Result<usize> {
 }
 
 /// Logs but ignores an error
-#[macro_export(log_error)]
+#[macro_export]
 #[doc(hidden)]
 macro_rules! log_error {
     ($maybe_error:expr,  $($args:tt)+) => (