feat(shipment): 添加删除混合装运功能

- 实现了 Delete 方法用于删除指定 ID 的混合装运记录

erp/shipment/mixed.go

@@ -57,3 +57,13 @@ func (m *mixed) Gen(ctx context.Context, args ArgsMixedGen) (mixedId int64, err
 	err = xClient.Call(ctx, "Gen", args, &mixedId)
 	return
 }
+
+// Delete @TITLE 删除
+func (m *mixed) Delete(ctx context.Context, mixedId int64) (err error) {
+	xClient, err := client.GetClient(m)
+	if err != nil {
+		return
+	}
+	reply := 0
+	return xClient.Call(ctx, "Delete", mixedId, &reply)
+}