removed es6-symbol completely, unneeded without for-of

package.json

@@ -70,7 +70,6 @@
     "doctrine": "1.2.x",
     "es6-map": "^0.1.3",
     "es6-set": "^0.1.4",
-    "es6-symbol": "^3.1.0",
     "eslint-import-resolver-node": "^0.2.0",
     "lodash.cond": "^4.3.0",
     "lodash.endswith": "^4.0.1",

src/core/getExports.js

@@ -1,4 +1,3 @@
-import 'es6-symbol/implement'
 import Map from 'es6-map'
 
 import * as fs from 'fs'

src/core/resolve.js

@@ -1,4 +1,3 @@
-import 'es6-symbol/implement'
 import Map from 'es6-map'
 import Set from 'es6-set'
 import assign from 'object-assign'

src/rules/namespace.js

@@ -1,4 +1,3 @@
-import 'es6-symbol/implement'
 import Map from 'es6-map'
 
 import Exports from '../core/getExports'

src/rules/no-duplicates.js

@@ -1,4 +1,3 @@
-import 'es6-symbol/implement'
 import Map from 'es6-map'
 import Set from 'es6-set'
 

src/rules/no-named-as-default-member.js

@@ -5,7 +5,6 @@
  * See LICENSE in root directory for full license.
  */
 
-import 'es6-symbol/implement'
 import Map from 'es6-map'
 
 import Exports from '../core/getExports'

src/rules/no-unresolved.js

@@ -3,8 +3,6 @@
  * @author Ben Mosher
  */
 
-import 'es6-symbol/implement'
-
 import resolve from '../core/resolve'
 
 module.exports = function (context) {

tests/src/package.js

@@ -1,5 +1,3 @@
-import 'es6-symbol/implement'
-
 var expect = require('chai').expect
 
 var path = require('path')
@@ -36,10 +34,10 @@ describe('package', function () {
   it('exports all configs', function (done) {
     fs.readdir(path.join(process.cwd(), 'config'), function (err, files) {
       if (err) { done(err); return }
-      for (let file of files) {
-        if (file[0] === '.') continue
+      files.forEach(file => {
+        if (file[0] === '.') return
         expect(module.configs).to.have.property(file.slice(0, -3)) // drop '.js'
-      }
+      })
       done()
     })
   })