Update to sveltekit 1.0

src/routes/__layout.svelte

@@ -1,31 +0,0 @@
-<script>
-    import Nav from '../components/Nav.svelte';
-    import userManager from '../components/UserManager.svelte'
-    import Modal from '../components/Modal.svelte'
-    import Footer from '../components/Footer.svelte'
-
-    export let segment;
-</script>
-
-<style>
-    :global(html[data-theme='dark']) {
-        --background-color: #222222;
-        --headings-color: #ffffff;
-        --font-color: #ffffff;
-    }
-
-    :global(body) {
-        font-family: 'Open Sans', sans-serif;
-        font-size: 1rem;
-        background-color: var(--background-color);
-        color: var(--font-color);
-        box-sizing: border-box;
-    }
-</style>
-
-<Modal/>
-<Nav {segment} rightComponent={userManager}/>
-
-<slot></slot>
-
-<Footer/>