I see that the question has been answered? Do you want to close, recycle or unlist this topic?
Close the topic If you close the topic, no one except moderators can reply.
Unlist the topic This will remove the topic from all lists so you only can see it if you have a link.
Recycle the topic Recycling is simple: Ask everyone to delete their posts and use the topic for something else.
NOTE: You can only recycle the topic without having to ask a moderator. I have tagged @t1_hopscotch in order to notify about this.