mod tidy

go.mod

@@ -14,9 +14,7 @@ require (
 	github.com/ipfs/go-ipfs-exchange-offline v0.0.1
 	github.com/ipfs/go-ipfs-routing v0.1.0
 	github.com/ipfs/go-ipld-cbor v0.0.3
-	github.com/ipfs/go-ipld-format v0.2.0
 	github.com/ipfs/go-log v1.0.4
-	github.com/ipfs/go-merkledag v0.3.1
 	github.com/ipfs/go-verifcid v0.0.1
 	github.com/ipld/go-ipld-prime v0.7.0
 	github.com/libp2p/go-libp2p-core v0.7.0