fix bug

@@ -165,10 +165,6 @@ $('.coupon-message-op-rel').on('click', function() {
     location.reload();
 });
 
-$('.nav-home').on('touchstart', function() {
-    $('.homebuttom').toggleClass('hide');
-});
-
 if ($('#noData').length > 0) {
     if (location.href.indexOf('?openby:yohobuy=') <= 0) {
         tip.show('网络异常!');