Docs: Remove Vue School Summer Sale banner (vuejs#3582)

Author: nicodevs

docs/.vuepress/public/images/vueschool/close.svg

@@ -3,10 +3,6 @@
     class="main-container"
     :class="{ 'has-top-banner': showTopBanner }"
   >
-    <BannerTop
-      v-if="showTopBanner"
-      @close="closeBannerTop"
-    />
     <ParentLayout>
       <template #page-top>
         <CarbonAds
@@ -59,23 +55,13 @@ export default {
   components: {
     ParentLayout,
     CarbonAds,
-    BuySellAds,
-    BannerTop: () => import('./components/BannerTop.vue')
+    BuySellAds
   },
   data () {
     return {
       sponsors,
       showTopBanner: false
     }
-  },
-  mounted () {
-    this.showTopBanner = !localStorage.getItem('VS_SUMMER_BANNER_CLOSED')
-  },
-  methods: {
-    closeBannerTop () {
-      this.showTopBanner = false
-      localStorage.setItem('VS_SUMMER_BANNER_CLOSED', 1)
-    }
   }
 }
 </script>