refactor: 移除订单创建时的优惠券批次时间校验逻辑

该校验逻辑已迁移至其他模块处理，此处移除冗余的时间校验代码，简化业务逻辑

internal/biz/order.go

@@ -3,10 +3,8 @@ package biz
 import (
 	"context"
 	"fmt"
-	"time"
 	err2 "voucher/api/err"
 	"voucher/internal/biz/bo"
-	"voucher/internal/biz/businesserr"
 	"voucher/internal/biz/vo"
 )
 
@@ -34,21 +32,6 @@ func (this *VoucherBiz) CmbOrder(ctx context.Context, req *bo.OrderCreateReqBo)
 		return nil, product, err3
 	}
 
-	if product.StartTime == nil {
-		return nil, product, businesserr.BatchNotSetStartedError
-	}
-	if product.EndTime == nil {
-		return nil, product, businesserr.BatchSetEndedError
-	}
-
-	nowTime := time.Now()
-	if nowTime.Before(*product.StartTime) {
-		return nil, product, businesserr.BatchNotStartedError
-	}
-	if nowTime.After(*product.EndTime) {
-		return nil, product, businesserr.BatchEndedError
-	}
-
 	order, err3 = this.order(ctx, req, product)
 	if err3 != nil {
 		return nil, product, err3