打分滑条取消分数的title

public/javascripts/course.js

@@ -673,8 +673,7 @@ $.fn.peSlider = function(settings){
                     friendlyVal = input.val() + ' ' + thisUnits;
                     slider.find('a').attr({
                         'aria-valuenow': ui.value,
-                        'aria-valuetext': friendlyVal,
-                        'title': friendlyVal
+                        'aria-valuetext': friendlyVal
                     });
                 })
                 .find('a')
@@ -684,7 +683,6 @@ $.fn.peSlider = function(settings){
                     'aria-valuemax': input.attr('max'),
                     'aria-valuenow': input.val(),
                     'aria-valuetext': friendlyVal,
-                    'title': friendlyVal,
                     'aria-labelledby': thisLabel
                 });
             input