Retrieve schedule record using params[:id] since @edit does not exist

Schedule Editor is converted to Angular therefore @edit does not exist

https://bugzilla.redhat.com/show_bug.cgi?id=1202571

vmdb/app/controllers/ops_controller/settings/schedules.rb

@@ -36,15 +36,14 @@ def schedule_edit
     assert_privileges("schedule_edit")
     case params[:button]
     when "cancel"
-      @schedule = MiqSchedule.find_by_id(session[:edit][:sched_id]) if session[:edit] && session[:edit][:sched_id]
+      @schedule = MiqSchedule.find_by_id(params[:id])
       if !@schedule || @schedule.id.blank?
         add_flash(_("Add of new %s was cancelled by the user") % ui_lookup(:model=>"MiqSchedule"))
       else
         add_flash(_("Edit of %{model} \"%{name}\" was cancelled by the user") % {:model=>ui_lookup(:model=>"MiqSchedule"), :name=>@schedule.name})
       end
       get_node_info(x_node)
       @schedule = nil
-      @edit = session[:edit] = nil  # clean out the saved info
       replace_right_cell(@nodetype)
     when "save", "add"
       schedule = params[:id] != "new" ? MiqSchedule.find_by_id(params[:id]) : MiqSchedule.new(:userid => session[:userid])