Add pubsub support to drand beacon

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

node/builder.go

@@ -292,7 +292,6 @@ func Online() Option {
 			Override(new(*sectorblocks.SectorBlocks), sectorblocks.NewSectorBlocks),
 			Override(new(*storage.Miner), modules.StorageMiner),
 			Override(new(dtypes.NetworkName), modules.StorageNetworkName),
-			Override(new(beacon.RandomBeacon), modules.MinerRandomBeacon),
 
 			Override(new(dtypes.StagingBlockstore), modules.StagingBlockstore),
 			Override(new(dtypes.StagingDAG), modules.StagingDAG),