events: remove unnecessary console instantiation

Previously, console had to be compiled in case it was not available
but this is no longer necessary - remove it.

PR-URL: nodejs/node#16212
Refs: nodejs/node#15111
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

lib/extras/events.js

@@ -49,9 +49,6 @@ Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
     return defaultMaxListeners;
   },
   set: function(arg) {
-    // force global console to be compiled.
-    // see https://github.com/nodejs/node/issues/4467
-    console;
     // check whether the input is a positive number (whose value is zero or
     // greater and not a NaN).
     if (typeof arg !== 'number' || arg < 0 || arg !== arg) {