http: remove dead code from internal/http.js

PR-URL: https://github.com/nodejs/node/pull/36630
Refs: https://github.com/nodejs/node/pull/32329
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>

lib/internal/http.js

@@ -8,14 +8,8 @@ const {
 const { setUnrefTimeout } = require('internal/timers');
 const { PerformanceEntry, notify } = internalBinding('performance');
 
-let nowCache;
 let utcCache;
 
-function nowDate() {
-  if (!nowCache) cache();
-  return nowCache;
-}
-
 function utcDate() {
   if (!utcCache) cache();
   return utcCache;
@@ -23,13 +17,11 @@ function utcDate() {
 
 function cache() {
   const d = new Date();
-  nowCache = d.valueOf();
   utcCache = d.toUTCString();
   setUnrefTimeout(resetCache, 1000 - d.getMilliseconds());
 }
 
 function resetCache() {
-  nowCache = undefined;
   utcCache = undefined;
 }
 
@@ -52,7 +44,6 @@ function emitStatistics(statistics) {
 module.exports = {
   kOutHeaders: Symbol('kOutHeaders'),
   kNeedDrain: Symbol('kNeedDrain'),
-  nowDate,
   utcDate,
   emitStatistics
 };