blockchain: revert handle_get_objects adding block id on tx not found

This differs from the original CN code, and there seems to be
no reason to include the block itself, if it was found

src/cryptonote_core/blockchain.cpp

@@ -1385,7 +1385,6 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
           << " transactions for block with hash: " << get_block_hash(bl)
           << std::endl
       );
-      rsp.missed_ids.push_back(get_block_hash(bl));
 
       // append missed transaction hashes to response missed_ids field,
       // as done below if any standalone transactions were requested