remove additional instances of window.Vue

app/assets/javascripts/commit/pipelines/pipelines_bundle.js

 /* eslint-disable no-param-reassign */
+
+import Vue from 'vue';
+import VueResource from 'vue-resource';
 import CommitPipelinesTable from './pipelines_table';
 
-window.Vue = require('vue');
-window.Vue.use(require('vue-resource'));
+Vue.use(VueResource);
 
 /**
  * Commits View > Pipelines Tab > Pipelines Table.

app/assets/javascripts/vue_pipelines_index/index.js

+import Vue from 'vue';
 import PipelinesStore from './stores/pipelines_store';
 import PipelinesComponent from './pipelines';
 import '../vue_shared/vue_resource_interceptor';
 
-const Vue = window.Vue = require('vue');
-window.Vue.use(require('vue-resource'));
-
 $(() => new Vue({
   el: document.querySelector('.vue-pipelines-index'),