Remove unused statement

lib/openproject_meeting/engine.rb

@@ -61,8 +61,6 @@ module MeetingsPlugin
             search.register :meetings
           end
 
-          activity_provider :meetings, :default => false, :class_name => ['Meeting', 'MeetingAgenda', 'MeetingMinutes']
-
           menu :project_menu, :meetings, {:controller => 'meetings', :action => 'index'}, :caption => :project_module_meetings, :param => :project_id, :after => :wiki
           menu :project_menu, :new_meeting, {:controller => 'meetings', :action => 'new'}, :param => :project_id, :caption => :label_meeting_new, :parent => :meetings