🔧 chore(files): remove unused import

- 删除未使用的AppError导入语句以清理代码

src/server/modules/files/file.service.ts

@@ -2,7 +2,6 @@ import { GenericCrudService } from '@/server/utils/generic-crud.service';
 import { DataSource } from 'typeorm';
 import { File } from './file.entity';
 import { MinioService } from './minio.service';
-// import { AppError } from '@/server/utils/errorHandler';
 import { v4 as uuidv4 } from 'uuid';
 import { logger } from '@/server/utils/logger';