refactor(PackagesView): remove unused queryCache import and related code

refactor(App): remove duplicate router-view element

Author: Francisca105

frontend/src/App.vue

@@ -5,7 +5,6 @@
   -->
   <!-- <AuthLoader v-if="authStore.isInitializing" /> -->
   <router-view />
-  <router-view />
 
   <ToastContainer />
   <PiniaColadaDevtools />

frontend/src/views/Dashboard/Packages/PackagesView.vue

@@ -59,7 +59,7 @@
 <script setup lang="ts">
 import { computed } from "vue";
 import { useEventStore } from "@/stores/event";
-import { useQuery, useQueryCache } from "@pinia/colada";
+import { useQuery } from "@pinia/colada";
 import { getPackages } from "@/api/packages";
 import Card from "@/components/ui/card/Card.vue";
 import CardContent from "@/components/ui/card/CardContent.vue";
@@ -86,11 +86,8 @@ const filtered = computed(() => {
   );
 });
 
-const queryCache = useQueryCache();
-
 const refetchPackages = async () => {
   await refetch();
-  queryCache.invalidateQueries({ key: ["packages"] });
 };
 
 const onCreated = () => refetchPackages();