perf_hooks: remove unnecessary assignment when name is undefined

PR-URL: https://github.com/nodejs/node/pull/32910
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>
Reviewed-By: Andrey Pechkurov <apechkurov@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/perf_hooks.js

@@ -407,8 +407,8 @@ class Performance {
   }
 
   clearMarks(name) {
-    name = name !== undefined ? `${name}` : name;
     if (name !== undefined) {
+      name = `${name}`;
       this[kIndex][kMarks].delete(name);
       _clearMark(name);
     } else {