remove the example code

src/components/overview.tsx

@@ -1,20 +1,5 @@
-import React, { useEffect, useState } from 'react';
+import React from 'react';
-import axios from 'axios';
 
 export const Overview: React.FC = () => {
-  const [msg, setMsg] = useState('LOADING');
+  return <>OVERVIEW</>;
-
-  useEffect(() => {
-    const interval = setInterval(() => {
-      axios.get('http://localhost:3000/system/timestamp', {
-        headers: {
-          Authorization: `Bearer ${sessionStorage.getItem('token')}`,
-        }
-      }).then((response) => setMsg(new Date(response.data).toISOString()));
-    }, 5000);
-
-    return () => clearInterval(interval);
-  }, []);
-
-  return <>OVERVIEW {msg}</>;
 };