sed高手求助

```go type NideshopUserLevel struct { Id int `orm:"column(id);auto"` Name string `orm:"column(name);size(30)"` Description string `orm:"column(description);size(255)"` } type NideshopUserCoupon struct { Id int `orm:"column(id);auto"` CouponId uint8 `orm:"column(coupon_id)"` CouponNumber string `orm:"column(coupon_number);size(20)"` UserId uint `orm:"column(user_id)"` UsedTime uint `orm:"column(used_time)"` OrderId uint32 `orm:"column(order_id)"` } type NideshopUserLevel struct { Id int `orm:"column(id);auto"` Name string `orm:"column(name);size(30)"` Description string `orm:"column(description);size(255)"` } ``` 用 sed 把重复的结构体 NideshopUserLevel {} 去掉,文件内还有未知的重复.