Remove unnecessary TODO

pkg/eth/backend.go

@@ -938,7 +938,6 @@ func (b *Backend) getSliceStem(headPath []byte, t state.Trie, response *GetSlice
 		nodePath := make([]byte, len(headPath[:i]))
 		copy(nodePath, headPath[:i])
 
-		// TODO: verify doesn't return for non-existent node
 		rawNode, _, err := t.(*trie.StateTrie).TryGetNode(trie.HexToCompact(nodePath))
 		if err != nil {
 			return err

pkg/eth/backend_utils.go

@@ -339,7 +339,6 @@ func fillSliceNodeData(
 	storage bool,
 ) (int64, error) {
 	// Populate the nodes map
-	// nodeVal := node.NodeValue
 	nodeValHash := crypto.Keccak256Hash(node.NodeValue)
 	nodesMap[common.Bytes2Hex(nodeValHash.Bytes())] = common.Bytes2Hex(node.NodeValue)