remove unneeded variable
remove unneeded variable

Caused compile error

leniel/fullcalendar,arenoir/fullcalendar,stephenreid/fullcalendar,pkasperski/fullcalendar,tbuckel/fullcalendar,lomaxx/fullcalendar,tojocky/fullcalendar,kapouer/fullcalendar,lphuberdeau/fullcalendar,lomaxx/fullcalendar,tojocky/fullcalendar,arenoir/fullcalendar,leniel/fullcalendar,lphuberdeau/fullcalendar,stephenreid/fullcalendar,pkasperski/fullcalendar,kapouer/fullcalendar,tbuckel/fullcalendar,tojocky/fullcalendar