🎨 Clean code

kernel/treenode/tree.go

@@ -33,17 +33,6 @@ import (
 	"github.com/siyuan-note/siyuan/kernel/util"
 )
 
-func StatTree(tree *parse.Tree) (ret *util.BlockStatResult) {
-	runeCnt, wordCnt, linkCnt, imgCnt, refCnt := tree.Root.Stat()
-	return &util.BlockStatResult{
-		RuneCount:  runeCnt,
-		WordCount:  wordCnt,
-		LinkCount:  linkCnt,
-		ImageCount: imgCnt,
-		RefCount:   refCnt,
-	}
-}
-
 func NodeHash(node *ast.Node, tree *parse.Tree, luteEngine *lute.Lute) string {
 	ialArray := node.KramdownIAL
 	sort.Slice(ialArray, func(i, j int) bool {