Fix remove locks.

consensus/consensus_service.go

@@ -429,8 +429,9 @@ func (consensus *Consensus) UpdateConsensusInformation() Mode {
 // IsLeader check if the node is a leader or not by comparing the public key of
 // the node with the leader public key
 func (consensus *Consensus) IsLeader() bool {
-	consensus.mutex.RLock()
-	defer consensus.mutex.RUnlock()
+	// TODO: if remove locks blockchain stucks.
+	//consensus.mutex.RLock()
+	//defer consensus.mutex.RUnlock()
 
 	return consensus.isLeader()
 }