lib: remove invalid parameter to toASCII

PR-URL: nodejs#48878
Refs: nodejs#48873
Refs: nodejs#48855
Refs: nodejs#48850
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

lib/url.js

@@ -401,10 +401,7 @@ Url.prototype.parse = function parse(url, parseQueryString, slashesDenoteHost) {
         // It only converts parts of the domain name that
         // have non-ASCII characters, i.e. it doesn't matter if
         // you call it with a domain that already is ASCII-only.
-
-        // Use lenient mode (`true`) to try to support even non-compliant
-        // URLs.
-        this.hostname = toASCII(this.hostname, true);
+        this.hostname = toASCII(this.hostname);
 
         // Prevent two potential routes of hostname spoofing.
         // 1. If this.hostname is empty, it must have become empty due to toASCII