Remove unused useState import in StrictMode.md

[emersonpisoni]

Removed unused import of useState from React.

import { useState, useEffect } from 'react';
import { createConnection } from './chat.js';

const serverUrl = 'https://localhost:1234';
const roomId = 'general';

export default function ChatRoom() {
  useEffect(() => {
    const connection = createConnection(serverUrl, roomId);
    connection.connect();
  }, []);
  return <h1>Welcome to the {roomId} room!</h1>;
}

In this part of StrictMode session, exactly after this text: In the original example, the bug wasn’t obvious. Now let’s wrap the original (buggy) code in <StrictMode>:

The useState is not necessary, so it can be removed.

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Size changes

📦 Next.js Bundle Analysis for react-dev

This analysis was generated by the Next.js Bundle Analysis action. 🤖

This PR introduced no changes to the JavaScript bundle! 🙌

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