Remove bootstrap peers wss0 and wss1

[ghost]

These two will be shut down, and their private keys and PeerIDs moved over to the new preloader hosts which were added in #1464:

To remove:

/dns4/wss0.bootstrap.libp2p.io/tcp/443/wss/ipfs/QmZMxNdpMkewiVZLMRxaNxUeZpDUb34pWjZ1kZvsd16Zic
/dns4/wss1.bootstrap.libp2p.io/tcp/443/wss/ipfs/Qmbut9Ywz9YEDrz8ySBSgWyJk41Uvm2QJPhwDJzJyGFsD6

https://github.com/ipfs/js-ipfs/search?q=wss0

[daviddias]

Done with:

• 90e9f68
• e3868f4