AUTO: remove file-system from test files

Author: lizbur10

package.json

@@ -12,7 +12,6 @@
     "babel-core": "6.26.3",
     "babel-preset-env": "1.7.0",
     "chai": "4.1.2",
-    "file-system": "2.2.2",
     "jsdom": "9.2.1",
     "mocha": "5.2.0",
     "mocha-jsdom": "~1.1.0",

test/helpers.js

@@ -1,6 +1,6 @@
 const chai = require('chai')
 global.expect = chai.expect
-const fs = require('file-system')
+const fs = require('fs')
 const jsdom = require('mocha-jsdom')
 const path = require('path')
 const babel = require('babel-core');