remove interfaces

modules/system/dao/dao.go

@@ -8,20 +8,16 @@ import (
 	"gorm.io/gorm"
 )
 
-type Dao interface {
-	Release(context.Context, int, string) error
-}
-
-type DaoImpl struct {
+type Dao struct {
 	Conf *config.Config
 	DB   *gorm.DB
 }
 
-func NewDao(DB *gorm.DB) Dao {
-	return &DaoImpl{DB: DB}
+func NewDao(DB *gorm.DB) *Dao {
+	return &Dao{DB: DB}
 }
 
-func (c *DaoImpl) Release(ctx context.Context, a int, b string) error {
+func (c *Dao) Release(ctx context.Context, a int, b string) error {
 	if a == 20 {
 		return errors.New("A cant't be 20 ")
 	}