url: do not pass WHATWG host to http.request

PR-URL: https://github.com/nodejs/node/pull/13409
Refs: https://github.com/nodejs/node/pull/10638
Reviewed-By: Anna Henningsen <anna@addaleax.net>

lib/internal/url.js

@@ -1298,7 +1298,6 @@ function domainToUnicode(domain) {
 function urlToOptions(url) {
   var options = {
     protocol: url.protocol,
-    host: url.host,
     hostname: url.hostname,
     hash: url.hash,
     search: url.search,