fix error

app/models/bulletin_feed.rb

@@ -129,8 +129,6 @@ class BulletinFeed
       a = {}
       if more_url
         a['show_url'] = "#{more_url}/#{anns.to_param}"
-      else
-        a['show_url'] = '#'
       end
       a["id"] = anns.uid
       a["title_translations"] = anns.title_translations