config: remove unneeded config options.

app/views/posts/partials/show/_notices.html.erb

@@ -23,8 +23,9 @@
 
     <%= render "post_disapprovals/counts", :disapprovals => post.disapprovals, :post => post %>
 
-    <% if CurrentUser.id == post.uploader_id && Danbooru.config.upload_feedback_topic.present? %>
-      <p>If you don't understand why your uploads keep getting deleted, you should ask on the <%= link_to "forum", forum_topic_path(Danbooru.config.upload_feedback_topic) %> for advice.</p>
+    <% if CurrentUser.id == post.uploader_id %>
+      <p>If you don't understand why your upload was deleted, you can ask for
+      advice in the Upload Feedback Thread on the forum.</p>
     <% end %>
   </div>
 <% end %>

config/danbooru_default_config.rb

@@ -53,10 +53,6 @@ module Danbooru
       "DanbooruBot"
     end
 
-    def upload_feedback_topic
-      ForumTopic.where(title: "Upload Feedback Thread").first
-    end
-
     # The ID of the "Curated" pool. If present, this pool will be updated daily with curated posts.
     def curated_pool_id
       nil
@@ -192,13 +188,6 @@ module Danbooru
       Socket.gethostname
     end
 
-    # Names of all Danbooru servers which serve out of the same common database.
-    # Used in conjunction with load balancing to distribute files from one server to
-    # the others. This should match whatever gethostname returns on the other servers.
-    def all_server_hosts
-      [server_host]
-    end
-
     # The method to use for storing image files.
     def storage_manager
       # Store files on the local filesystem.