remove duplicate code

src/App.vue

@@ -68,9 +68,6 @@ import TopBar from './components/TopBar.vue'
       }
     },
     mounted: function(){
-      if (!this.no_locale) {
-        this._i18n.locale = this.$store.state.locale      
-      }
       document.title = 'Ordbøkene - ' + process.env.VUE_APP_VERSION_LABEL
     },
     methods: {