- remove useless legacy codes.

- refactor models

business/model/legacymodel/storebill.go

@@ -0,0 +1,21 @@
+package legacymodel
+
+import "time"
+
+type StoreBill struct {
+	Id       int       `orm:"column(id);auto"`
+	Date     time.Time `orm:"column(date);type(datetime)"`
+	Url      string    `orm:"column(url);size(255)"`
+	StoreId  int       `orm:"column(store_id)"`
+	BillName string    `orm:"column(bill_name);size(30)"`
+}
+
+func (t *StoreBill) TableName() string {
+	return "store_bill"
+}
+
+func (*StoreBill) TableIndex() [][]string {
+	return [][]string{
+		[]string{"StoreId", "Date"},
+	}
+}