feat: remove react-query dependency and simplify App component

app/root.tsx

@@ -1,4 +1,3 @@
-import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
 import type { ReactNode } from 'react'
 import {
   isRouteErrorResponse,
@@ -58,14 +57,8 @@ export function Layout({ children }: { children: ReactNode }) {
   )
 }
 
-const queryClient = new QueryClient()
-
 export default function App() {
-  return (
-    <QueryClientProvider client={queryClient}>
-      <Outlet />
-    </QueryClientProvider>
-  )
+  return <Outlet />
 }
 
 export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {