web下单，品牌可以非必选，后台下单品牌是必须，需要统一

http://zentao.jdshangmen.com/bug-view-1070.html

src/views/ecw/order/warehousing/components/editDialog.vue

@@ -500,7 +500,6 @@ export default {
         if (this.warehousing.brand && this.warehousing.brand !== 0){
           this.form.brand = this.warehousing.brand.toString() || ''
         }
-        t
         this.handleBrandChange(this.form.brand)
         getWarehouseLastUpdateApprovalInfo({
           orderItemId: this.warehousing.orderItemId,