Merge pull request #285 from bootjp/feature/fix-create-node

Remove Uint64ToInt64 function

Author: bootjp

internal/convert.go

@@ -8,13 +8,6 @@ import (
 
 var ErrIntOverflow = errors.New("int64 に変換できません（オーバーフロー）")
 
-func Uint64ToInt64(u uint64) (int64, error) {
-	if u > math.MaxInt64 {
-		return 0, ErrIntOverflow
-	}
-	return int64(u), nil
-}
-
 func Uint64ToInt(u uint64) (int, error) {
 	if u > math.MaxInt64 {
 		return 0, ErrIntOverflow