rework config and delete action

[MattDHill]

Needs migration

delete zmq-enabled

delete rpc.advanced.serialversion
rpc = {
  ...rpc,
  ...rpc.advanced
}
delete rpc.advanced

mempool = advanced.mempool
delete advanced.mempool

peers = advanced.peers
delete advanced.peers

if (advanced.pruning.mode == 'manual') {
  advanced.pruning = { mode: 'automatic', size: 550 }
}