Fix lint warning

Author: rmunn

frontend/src/routes/(authenticated)/project/[project_code]/+page.svelte

@@ -27,7 +27,7 @@
   import Dropdown from '$lib/components/Dropdown.svelte';
   import ConfirmDeleteModal from '$lib/components/modals/ConfirmDeleteModal.svelte';
   import {_deleteProject} from '$lib/gql/mutations';
-  import { goto, invalidate } from '$app/navigation';
+  import { goto } from '$app/navigation';
   import MoreSettings from '$lib/components/MoreSettings.svelte';
   import { AdminContent, PageBreadcrumb } from '$lib/layout';
   import Markdown from 'svelte-exmarkdown';