/// <summary>
/// Forget a user
/// </summary>
/// <param name="username"></param>
public void RemoveUserFromChat(string username)
{
if (chatClients.TryGetValue(username, out ChatInstance chatUiAndChannel))
{
directoryMonitor.RemoveChatUi(chatUiAndChannel.Item1);
chatUiAndChannel.Item1.Dispose();
chatUiAndChannel.Item2.Dispose();
chatClients.Remove(username);
}
}