style(core): remove commented-out assertion block

Author: Carlos Fortes

src/DownloadClient.cpp

@@ -692,11 +692,6 @@ void CUpDownClient::SendBlockRequests()
 					m_PendingBlocks_list.push_back(pblock);
 				}
 			} else {
-				// Original code assumed this could never happen:
-				// // WTF, we just freed blocks.
-				// wxFAIL_MSG("No free blocks to request after freeing some blocks");
-				// return;
-				
 				// It's possible the freed blocks were not available on our source.
 				// Just drop ourselves gracefully instead of crashing.
 				if (!GetSentCancelTransfer()) {