Remove verifcid as it is handled in go-cid

This commit was moved from ipfs/go-blockservice@f4c929d

Author: Kubuxu

blockservice/blockservice.go

@@ -14,7 +14,6 @@ import (
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	exchange "github.com/ipfs/go-ipfs-exchange-interface"
 	logging "github.com/ipfs/go-log"
-	"github.com/ipfs/go-verifcid"
 )
 
 var log = logging.Logger("blockservice")
@@ -131,11 +130,6 @@ func NewSession(ctx context.Context, bs BlockService) *Session {
 // TODO pass a context into this if the remote.HasBlock is going to remain here.
 func (s *blockService) AddBlock(o blocks.Block) error {
 	c := o.Cid()
-	// hash security
-	err := verifcid.ValidateCid(c)
-	if err != nil {
-		return err
-	}
 	if s.checkFirst {
 		if has, err := s.blockstore.Has(c); has || err != nil {
 			return err
@@ -156,13 +150,6 @@ func (s *blockService) AddBlock(o blocks.Block) error {
 }
 
 func (s *blockService) AddBlocks(bs []blocks.Block) error {
-	// hash security
-	for _, b := range bs {
-		err := verifcid.ValidateCid(b.Cid())
-		if err != nil {
-			return err
-		}
-	}
 	var toput []blocks.Block
 	if s.checkFirst {
 		toput = make([]blocks.Block, 0, len(bs))
@@ -211,11 +198,6 @@ func (s *blockService) getExchange() exchange.Fetcher {
 }
 
 func getBlock(ctx context.Context, c cid.Cid, bs blockstore.Blockstore, fget func() exchange.Fetcher) (blocks.Block, error) {
-	err := verifcid.ValidateCid(c) // hash security
-	if err != nil {
-		return nil, err
-	}
-
 	block, err := bs.Get(c)
 	if err == nil {
 		return block, nil
@@ -259,18 +241,6 @@ func getBlocks(ctx context.Context, ks []cid.Cid, bs blockstore.Blockstore, fget
 	go func() {
 		defer close(out)
 
-		k := 0
-		for _, c := range ks {
-			// hash security
-			if err := verifcid.ValidateCid(c); err == nil {
-				ks[k] = c
-				k++
-			} else {
-				log.Errorf("unsafe CID (%s) passed to blockService.GetBlocks: %s", c, err)
-			}
-		}
-		ks = ks[:k]
-
 		var misses []cid.Cid
 		for _, c := range ks {
 			hit, err := bs.Get(c)