Alternatively:
Tribaldex.com, OpenHive (top menu), Manage, PunksOnHive, click the nft you want to burn, click the "+" to add it to the inbox, open the inbox, click "burn"

It makes more sense for NFT that have locked tokens as you get the locked tokens back. I've seen people do it with other NFT series that have batches to - like an artist is required to get 10 of a series, but they want 1 unique print. So they print the 10, then burn the others