Consensus doesn't require anymore `Node` as a circular dependency.

core/blockchain_impl.go

@@ -327,19 +327,8 @@ func VerifyBlockCrossLinks(blockchain BlockChain, block *types.Block) error {
 		// ReadCrossLink beacon chain usage.
 		cl, err := blockchain.ReadCrossLink(crossLink.ShardID(), crossLink.BlockNum())
 		if err == nil && cl != nil {
-			utils.Logger().Err(errAlreadyExist).
-				Uint64("beacon-block-number", block.NumberU64()).
-				Interface("remote", crossLink).
-				Interface("local", cl).
-				Msg("[CrossLinkVerification]")
-			// TODO Add slash for exist same blocknum but different crosslink
-			return errors.Wrapf(
-				errAlreadyExist,
-				"[CrossLinkVerification] shard: %d block: %d on beacon block %d",
-				crossLink.ShardID(),
-				crossLink.BlockNum(),
-				block.NumberU64(),
-			)
+			// Add slash for exist same blocknum but different crosslink
+			return errAlreadyExist
 		}
 		if err := VerifyCrossLink(blockchain, crossLink); err != nil {
 			return errors.Wrapf(err, "cannot VerifyBlockCrossLinks")