.clean up the code

frontend/src/main.tsx

@@ -1,9 +0,0 @@
-import { StrictMode } from "react";
-import { createRoot } from "react-dom/client";
-import "./index.css";
-import App from "./App.tsx";
-import { Toaster } from "@/components/ui/sonner";
-createRoot(document.getElementById("root")!).render(<StrictMode>
-    <App />
-    <Toaster position="bottom-left" duration={1000}/>
-  </StrictMode>);