net: Do not attempt to read raw blocks from disk

src/net_processing.cpp

@@ -2511,6 +2511,8 @@ void PeerManagerImpl::ProcessGetBlockData(CNode& pfrom, Peer& peer, const CInv&
     std::shared_ptr<const CBlock> pblock;
     if (a_recent_block && a_recent_block->GetHash() == pindex->GetBlockHash()) {
         pblock = a_recent_block;
+    /*
+    // Blackcoin: do not read raw blocks from disk as the disk format is actually different
     } else if (inv.IsMsgWitnessBlk()) {
         // Fast-path: in this case it is possible to serve the block directly from disk,
         // as the network format matches the format on disk
@@ -2520,6 +2522,7 @@ void PeerManagerImpl::ProcessGetBlockData(CNode& pfrom, Peer& peer, const CInv&
         }
         m_connman.PushMessage(&pfrom, msgMaker.Make(NetMsgType::BLOCK, Span{block_data}));
         // Don't set pblock as we've sent the block
+    */
     } else {
         // Send block from disk
         std::shared_ptr<CBlock> pblockRead = std::make_shared<CBlock>();