Remove header section from Index page for a cleaner layout

src/pages/Index.tsx

@@ -35,13 +35,6 @@ const Index = () => {
   return (
     <Layout>
       <div className="container mx-auto px-4 py-6">
-        <div className="mb-6">
-          <h1 className="text-3xl font-bold mb-2">Picture Feed</h1>
-          <p className="text-muted-foreground">
-            Discover amazing pictures shared on Nostr
-          </p>
-        </div>
-
         <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
           {isLoading ? (
             // Loading skeletons