fix: remove old matplan route after rename to matsedel

frontend/app/matplan/page.tsx

@@ -1,18 +0,0 @@
-import { fetchJson } from '../../lib/api';
-import type { Recipe } from '../../features/inventory/types';
-import Navigation from '../Navigation';
-import MealPlanClient from './MealPlanClient';
-
-export default async function MealPlanPage() {
-  const recipes = await fetchJson<Recipe[]>('/api/recipes').catch(() => [] as Recipe[]);
-  return (
-    <main style={{ padding: '1rem', maxWidth: '900px', margin: '0 auto' }}>
-      <Navigation />
-      <h1 style={{ marginBottom: '0.25rem' }}>Matsedel</h1>
-      <p style={{ color: '#666', marginBottom: '1.5rem' }}>
-        Välj ett recept per dag — se en samlad ingredienslista i slutet.
-      </p>
-      <MealPlanClient recipes={recipes} />
-    </main>
-  );
-}