If you prefer not to see the stock dialer's missed call notifications in the notification bar along with drupe's floating missed call notifications, you can hide them by going to drupe settings > Dialer > Missed Calls > check Call Notification.
If you prefer not to see the stock dialer's missed call notifications in the notification bar along with drupe's floating missed call notifications, you can hide them by going to drupe settings > Dialer > Missed Calls > check Call Notification.