chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

extensions/csharp/src/csharp.rs

@@ -38,7 +38,7 @@ impl CsharpExtension {
         }
 
         if let Some(path) = &self.cached_binary_path {
-            if fs::metadata(&path).map_or(false, |stat| stat.is_file()) {
+            if fs::metadata(path).map_or(false, |stat| stat.is_file()) {
                 return Ok(OmnisharpBinary {
                     path: path.clone(),
                     args: binary_args,
@@ -107,7 +107,7 @@ impl CsharpExtension {
             for entry in entries {
                 let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?;
                 if entry.file_name().to_str() != Some(&version_dir) {
-                    fs::remove_dir_all(&entry.path()).ok();
+                    fs::remove_dir_all(entry.path()).ok();
                 }
             }
         }