fix: 去除if空语句

gongchunyi

昨天 ba1ebf33c31ad86c8650eac7014996a8cc0f20f4

 src/main/java/com/ruoyi/purchase/service/IPurchaseLedgerService.java

@@ -43,4 +43,6 @@
    String getPurchaseNo();

    AjaxResult importData(MultipartFile file);

    PurchaseLedgerDto getPurchaseByCode(PurchaseLedgerDto purchaseLedgerDto);
}