Fix JS duplicated code

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/assets/javascripts/environments/components/environments_table.js

@@ -69,12 +69,6 @@ export default {
     },
   },
 
-  methods: {
-    folderUrl(model) {
-      return `${window.location.pathname}/folders/${model.folderName}`;
-    },
-  },
-
   template: `
     <table class="table ci-table">
       <thead>

spec/javascripts/environments/mock_data.js

@@ -162,19 +162,3 @@ export const folder = {
   created_at: '2017-02-01T19:42:18.400Z',
   updated_at: '2017-02-01T19:42:18.400Z',
 };
-
-export const folder = {
-  folderName: 'build',
-  size: 5,
-  id: 12,
-  name: 'build/update-README',
-  state: 'available',
-  external_url: null,
-  environment_type: 'build',
-  last_deployment: null,
-  'stop_action?': false,
-  environment_path: '/root/review-app/environments/12',
-  stop_path: '/root/review-app/environments/12/stop',
-  created_at: '2017-02-01T19:42:18.400Z',
-  updated_at: '2017-02-01T19:42:18.400Z',
-};