(fix) dropped old calendar sync/tag properties

SoObjects/Appointments/SOGoAppointmentFolder.h

@@ -166,12 +166,6 @@ typedef enum {
 - (BOOL) showCalendarTasks;
 - (void) setShowCalendarTasks: (BOOL) new;
 
-- (NSString *) syncTag;
-- (void) setSyncTag: (NSString *) newSyncTag;
-
-- (BOOL) synchronizeCalendar;
-- (void) setSynchronizeCalendar: (BOOL) new;
-
 - (BOOL) includeInFreeBusy;
 - (void) setIncludeInFreeBusy: (BOOL) newInclude;