Here is the simple action to delete user from admin Panel..
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
Future<void> deleteUser(String uid) async {
try {
// Delete the user document from Firestore
await FirebaseFirestore.instance.collection('users').doc(uid).delete();
// Delete the user from FirebaseAuth
await FirebaseAuth.instance.currentUser!.delete();
print('User deleted successfully');
} catch (e) {
throw Exception('Error while deleting the user: $e');
}
}