Refactor file removal logic in iOS app configuration

- Simplified the file removal logic for the module map source in the `regroup_header_artifacts` function, ensuring clearer context handling during the removal process.
- This change enhances code readability and maintains the existing functionality without introducing any new behavior.

These modifications contribute to a cleaner and more maintainable codebase.

Author: vivianjeng

mopro-ffi/src/app_config/ios.rs

@@ -264,8 +264,7 @@ pub fn regroup_header_artifacts(
         // (loaded via -Xcc -fmodule-map-file) is the sole definition for all
         // Xcode versions, avoiding duplicate-module errors on Xcode < 26.
         if modmap_src.exists() {
-            fs::remove_file(&modmap_src)
-                .with_context(|| format!("removing {modmap_src:?}"))?;
+            fs::remove_file(&modmap_src).with_context(|| format!("removing {modmap_src:?}"))?;
         }
         if header_src.exists() {
             fs::rename(&header_src, target_dir.join(header_name))