How to disable the notification badge on Whatsapp on LG G3?

I have LG G3. I want to disable all notifications from whatsapp, when I mute a group the only thing left is the notification badge (red number) on the app. Browsing for "android turn off badge notification lgg3" only gives me hits regarding Samsung TouchWiz and iPhone, and I so far haven't been able to locate anything in the menu of the app either. How can I turn off the display of unread messages on the icon of the Whatsapp app?