App.tsx: Remove headers in request

src/App.tsx

@@ -121,16 +121,10 @@ class App extends React.Component<IAppProps> {
 
 async function fetchConfiguration(): Promise<Configuration> {
   const url = `${import.meta.env.VITE_API_URL}`;
-  const myHeaders = new Headers({
-    'Content-Type': 'application/json'
-  });
 
-  const myInit = {
-    method: 'POST',
-    headers: myHeaders
-  };
-
-  return await fetch(url, myInit)
+  return await fetch(url, {
+    method: 'POST'
+  })
     .then((response) =>
       response.json()
     ) as Configuration;