How to remove reCAPTCHA after phone authentication

I am using phone authentication on Flutter Web like this:

  signInWithPhoneNumber(String phone) async {
    try {
      confirmationResult = await _auth.signInWithPhoneNumber(phone);
    } catch (e) {
      return onAuthenticationError();
    }
  }

Now everything is fine, It's working but in the start, I get the reCAPTCHA in the bottom right of the page and it's persistent, not even going after solving reCAPTCHA. How do I get rid of it after authentication?