Fix syntax issue in swb_event_seeder

Author: amaierhofer

db/seeds/development/support/swb_event_seeder.rb

@@ -5,11 +5,6 @@
 #  or later. See the COPYING file at the top-level directory or at
 #  https://github.com/hitobito/hitobito_swb.
 
-module TsModel
-  extend ActiveSupport::Concern
-
- require Rails.root.join("db", "seeds", "support", "event_seeder")
-
 class SwbEventSeeder < EventSeeder
   def seed_event(group_id, type)
     values = event_values(group_id)