删除商品时 前端增加 promotionId

@@ -190,15 +190,16 @@ $('.icon-del').on('touchstart', function(e) {
             rightBtnText: '确定'
         }
     }, function() {
-        var id = $this.closest('.shopping-cart-good').data('id'),
+        var $shoppingCartGood = $this.closest('.shopping-cart-good'),
             count = $this.data('count');
 
         $.ajax({
             method: 'post',
             url: '/cart/index/del',
             data: {
-                sku: id,
-                count: count
+                sku: $shoppingCartGood.data('id'),
+                count: count,
+                promotionId: $shoppingCartGood.data('promotion')
             }
         }).then(function(data) {
             if (data.code === 200) {