I think you just need to transfer the coins out
That's what I also did if I have a huge amount in one of my wallet I just transfer to another wallet, because there is no restriction on the number of wallet that you can create you can create as many as you like and you will not be restricted, if you want to separate your good coins to your bad tokens you can also do the same, hiding the coin has no options in any wallets.
I used to have the same problem, lots of coins that I thought were not good in the wallet, but there was no option to delete or hide them. Finally I did the same thing, transferring it to another wallet, which requires a small transfer fee