url: remove unnecessary object call to kFormat

PR-URL: nodejs#45492
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

lib/internal/url.js

@@ -748,13 +748,13 @@ class URL {
   toString() {
     if (!isURLThis(this))
       throw new ERR_INVALID_THIS('URL');
-    return this[kFormat]({});
+    return this[kFormat]();
   }
 
   get href() {
     if (!isURLThis(this))
       throw new ERR_INVALID_THIS('URL');
-    return this[kFormat]({});
+    return this[kFormat]();
   }
 
   set href(input) {
@@ -1011,7 +1011,7 @@ class URL {
   toJSON() {
     if (!isURLThis(this))
       throw new ERR_INVALID_THIS('URL');
-    return this[kFormat]({});
+    return this[kFormat]();
   }
 
   static createObjectURL(obj) {