Fix unneccessary sidebar button on index

public/static/buttons.js

@@ -31,20 +31,4 @@ document.addEventListener('DOMContentLoaded', () => {
         toggleColorTheme();
         updateButtonText();
     });
-});
-
-/**
- * -----------------------
- * Sidebar toggle
- * -----------------------
- */
-
-function toggleSidebar() {
-    const sidebar = document.querySelector('.sidebar');
-    sidebar.classList.toggle('collapsed');
-}
-
-document.addEventListener('DOMContentLoaded', () => {
-    const button = document.querySelector('.sidebar-toggle');
-    button.addEventListener('click', toggleSidebar);
 });