Update several_schedules.rake

lib/tasks/several_schedules.rake

@@ -7,13 +7,11 @@ namespace :data do
       program.selected_schedule = schedule
       program.save
       program.events.each do |event|
-        unless event.start_time.nil? && event.room_id.nil?
+        unless event.room_id.nil?
           # we can not use .room as this relation has been removed
           EventSchedule.create(event: event,
                                schedule: schedule,
-                               start_time: event.start_time,
                                room_id: event.room_id)
-          event.start_time = nil
           event.room_id = nil
           event.save
         end