Eliminate advice to delete macaroons.db
There is no need to delete the macaroons.db to add signing permission to the .macaroon files, remove this advice
@@ -104,7 +104,8 @@ In order to execute a swap, LND needs to be rebuilt with sub servers enabled.
- Make sure there are no macaroons in the lnd dir
`~/.lnd/data/chain/bitcoin/mainnet`. If there are, lnd has been started
before and in that case, it could be that `admin.macaroon` doesn't contain
- signer permission. Delete `macaroons.db` and `*.macaroon`.
+ signer permission. Stop lnd, delete `*.macaroon` files, restart lnd to
+ regenerate them with the signer permission.
DO NOT DELETE `wallet.db` !
