Follower: revert check of join block different from fetched block

Signed-off-by: Yoav Tock <tock@il.ibm.com>
Change-Id: I7089df4f1bfc200a5f17582df0da7d4172f8f09b

orderer/common/follower/follower_chain.go

@@ -11,8 +11,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/golang/protobuf/proto"
-
 	"github.com/hyperledger/fabric-protos-go/common"
 	"github.com/hyperledger/fabric/bccsp"
 	"github.com/hyperledger/fabric/common/flogging"
@@ -347,10 +345,6 @@ func (c *Chain) pull() error {
 		c.logger.Info("Onboarding finished successfully, pulled blocks up to join-block")
 	}
 
-	if c.joinBlock != nil && !proto.Equal(c.ledgerResources.Block(c.joinBlock.Header.Number).Data, c.joinBlock.Data) {
-		c.logger.Panicf("Join block (%d) we pulled mismatches block we joined with", c.joinBlock.Header.Number)
-	}
-
 	err = c.pullAfterJoin()
 	if err != nil {
 		return errors.WithMessage(err, "failed to pull after join block")