I used to do Air drop and bounty. Get all coins in time when the market is down. The value of all these coins lost 90% even now looking at it I do not believe it is no longer valid.
I cannot sell them because no one buys them, and its value can only be enough to transfer to exchange.
So do you have a way to hide it or delete all the coins from your wallet?
you cant delete or hide token in myetherwallet once you add it in your wallet
if you just dont want to see the token its better to make a new wallet and just move your ethereum to the new wallet
as of now the coin might be useless but there still a small chance that price will increase someday
so its better to make a backup of your wallet so you can still recover it someday