Revert prerender hack that ignored 404s

svelte.config.js

@@ -6,18 +6,7 @@ const config = {
 	// Consult https://svelte.dev/docs/kit/integrations
 	// for more information about preprocessors
 	preprocess: vitePreprocess(),
-	kit: {
-		adapter: adapter(),
-		prerender: {
-			handleHttpError: ({ status, path }) => {
-				if (status === 404) {
-					console.warn(`Skipping prerender of ${path} (expected 404)`);
-					return;
-				}
-				throw new Error(`${status} ${path}`);
-			}
-		}
-	}
+	kit: { adapter: adapter() }
 };
 
 export default config;