diff --git a/tree.go b/tree.go
index 98581b9c..24f14060 100644
--- a/tree.go
+++ b/tree.go
@@ -41,12 +41,6 @@ func (ps Params) ByName(name string) (va string) {
 	return
 }
 
-func strToBytes(s string) []byte {
-	x := (*[2]uintptr)(unsafe.Pointer(&s))
-	h := [3]uintptr{x[0], x[1], x[1]}
-	return *(*[]byte)(unsafe.Pointer(&h))
-}
-
 func bytesToStr(b []byte) string {
 	return *(*string)(unsafe.Pointer(&b))
 }