repl: remove obsolete TODO

It's long past v0.3.0 and .break isn't going anywhere anytime soon.

PR-URL: https://github.com/nodejs/io.js/pull/2081
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>

lib/repl.js

@@ -855,7 +855,6 @@ function addStandardGlobals(completionGroups, filter) {
 }
 
 function defineDefaultCommands(repl) {
-  // TODO remove me after 0.3.x
   repl.defineCommand('break', {
     help: 'Sometimes you get stuck, this gets you out',
     action: function() {