refactor: remove unused constant

Author: rhyslbw

apps/browser-extension-wallet/src/utils/constants.ts

@@ -15,8 +15,6 @@ export const cardanoCoin: Wallet.CoinId = {
   symbol: CARDANO_COIN_SYMBOL[Wallet.Cardano.NetworkId.Mainnet]
 };
 
-export const EPOCH_DURATION_DAYS = 5;
-
 export const MIN_COIN_TO_SEND = 1;
 
 type StaticBalanceTracker = {