You can dismiss any cryptocurrency with zero balance from the list of your coins (except for Bitcoin, which is always displayed). To hide the wallet for a certain cryptocurrency:
1. On the main screen of the app, in the Your coins section, press the coin and swipe left;
2. Tap the closed eye icon — the wallet for the chosen coin is now hidden.
Keep in mind that when you hide a wallet, you don’t delete it. If someone sends funds to the hidden wallet, it will be displayed in the list of your coins again. Also, you can unhide it anytime, by adding the necessary cryptocurrency one more time.