esm: remove unnecessary null coalescing operator

Author: mag123c

lib/internal/modules/esm/module_job.js

@@ -65,7 +65,7 @@ const getUndefinedCJSGlobalLike = (errorMessage) =>
   ArrayPrototypeFind(
     CJSGlobalLike,
     (globalLike) => errorMessage === `${globalLike} is not defined`,
-  ) ?? null;
+  );
 
 
 /**