Remove unneeded package ps-node

lib/tools/phantomas/phantomasWrapper.js

@@ -1,6 +1,5 @@
 var async                   = require('async');
 var Q                       = require('q');
-var ps                      = require('ps-node');
 var path                    = require('path');
 var debug                   = require('debug')('ylt:phantomaswrapper');
 var phantomas               = require('phantomas');

package.json

@@ -63,7 +63,6 @@
     "meow": "5.0.0",
     "parse-color": "1.0.0",
     "phantomas": "github:macbre/phantomas#devel",
-    "ps-node": "0.1.6",
     "q": "1.5.1",
     "request": "2.88.0",
     "rimraf": "2.6.3",