Removing unused $nuxt.{suffixes} that I found

- routeChanged  (didn't find any watches of this event)
- nbFetching (The only place reading this was a computed property which wasn't used anywhere)

shell/initialize/App.js

@@ -30,8 +30,6 @@ export default {
     isOnline: true,
 
     showErrorPage: false,
-
-    nbFetching: 0
   }),
 
   beforeCreate() {
@@ -65,10 +63,6 @@ export default {
     isOffline() {
       return !this.isOnline;
     },
-
-    isFetching() {
-      return this.nbFetching > 0;
-    },
   },
 
   methods: {

shell/initialize/client.js

@@ -30,10 +30,7 @@ const isDev = process.env.dev;
 const debug = isDev;
 
 // Fetch mixin
-if (!Vue.__nuxt__fetch__mixin__) {
-  Vue.mixin(fetchMixin);
-  Vue.__nuxt__fetch__mixin__ = true;
-}
+Vue.mixin(fetchMixin);
 
 // Component: <NuxtLink>
 Vue.component(NuxtLink.name, NuxtLink);
@@ -173,7 +170,6 @@ async function loadAsyncComponents(to, from, next) {
     }
 
     this.error({ statusCode, message });
-    this.$nuxt.$emit('routeChanged', to, from, err);
     next();
   }
 }
@@ -444,15 +440,11 @@ async function render(to, from, next) {
   } catch (err) {
     const error = err || {};
 
-    if (error.message === 'ERR_REDIRECT') {
-      return this.$nuxt.$emit('routeChanged', to, from, error);
-    }
     _lastPaths = [];
 
     globalHandleError(error);
 
     this.error(error);
-    this.$nuxt.$emit('routeChanged', to, from, error);
     next();
   }
 }
@@ -527,11 +519,6 @@ function nuxtReady(_app) {
   if (typeof window._onNuxtLoaded === 'function') {
     window._onNuxtLoaded(_app);
   }
-  // Add router hooks
-  router.afterEach((to, from) => {
-    // Wait for fixPrepatch + $data updates
-    Vue.nextTick(() => _app.$nuxt.$emit('routeChanged', to, from));
-  });
 }
 
 const noopData = () => {

shell/mixins/fetch.client.js

@@ -65,7 +65,6 @@ function $fetch() {
 }
 
 async function $_fetch() { // eslint-disable-line camelcase
-  this.$nuxt.nbFetching++;
   this.$fetchState.pending = true;
   this.$fetchState.error = null;
   this._hydrated = false;
@@ -90,6 +89,4 @@ async function $_fetch() { // eslint-disable-line camelcase
   this.$fetchState.error = error;
   this.$fetchState.pending = false;
   this.$fetchState.timestamp = Date.now();
-
-  this.$nextTick(() => this.$nuxt.nbFetching--);
 }