♻️ refactor(salary): 移除未使用的导入和依赖

- 在薪资自定义路由中移除未使用的 DeleteSalarySchema 导入
- 在薪资服务中移除未使用的 Repository 和 AreaEntity 导入，简化代码结构

allin-packages/salary-module/src/routes/salary-custom.routes.ts

@@ -8,7 +8,6 @@ import {
   SalaryLevelSchema,
   CreateSalarySchema,
   UpdateSalarySchema,
-  DeleteSalarySchema,
   QuerySalarySchema,
   GetSalaryByProvinceCitySchema
 } from '../schemas/salary.schema';

allin-packages/salary-module/src/services/salary.service.ts

@@ -1,7 +1,7 @@
 import { GenericCrudService } from '@d8d/shared-crud';
-import { DataSource, Repository, Not } from 'typeorm';
+import { DataSource, Not } from 'typeorm';
 import { SalaryLevel } from '../entities/salary-level.entity';
-import { AreaService, AreaEntity, AreaLevel } from '@d8d/geo-areas';
+import { AreaService, AreaLevel } from '@d8d/geo-areas';
 
 export class SalaryService extends GenericCrudService<SalaryLevel> {
   private areaService: AreaService;