refactor: 清理租户API旧模块代码

src/Application/TakeoutSaaS.Application/App/Billings/Queries/GetOverdueBillingsQuery.cs

@@ -1,21 +0,0 @@
-using MediatR;
-using TakeoutSaaS.Application.App.Billings.Dto;
-using TakeoutSaaS.Shared.Abstractions.Results;
-
-namespace TakeoutSaaS.Application.App.Billings.Queries;
-
-/// <summary>
-/// 查询逾期账单列表。
-/// </summary>
-public sealed record GetOverdueBillingsQuery : IRequest<PagedResult<BillingListDto>>
-{
-    /// <summary>
-    /// 页码（从 1 开始）。
-    /// </summary>
-    public int PageNumber { get; init; } = 1;
-
-    /// <summary>
-    /// 每页条数。
-    /// </summary>
-    public int PageSize { get; init; } = 20;
-}