Update calendar.html

pages/calendar.html

@@ -519,9 +519,7 @@
                         center: 'title',
                         right: 'month,agendaWeek,agendaDay'
                     },
-                    buttonText: {//This is to add icons to the visible buttons
-                        prev: "<span class='fa fa-caret-left'></span>",
-                        next: "<span class='fa fa-caret-right'></span>",
+                    buttonText: {
                         today: 'today',
                         month: 'month',
                         week: 'week',