Revert "fixes #1286"

This reverts commit 799fc6223f.

app/logical/post_sets/post.rb

@@ -69,10 +69,6 @@ module PostSets
       tag_string =~ /\*/
     end
 
-    def is_empty_search?
-      posts.count == 0
-    end
-
     def current_page
       [page.to_i, 1].max
     end

app/presenters/post_set_presenters/post.rb

@@ -9,9 +9,7 @@ module PostSetPresenters
     end
 
     def related_tags
-      if post_set.is_empty_search?
-        suggested_tags
-      elsif post_set.is_pattern_search?
+      if post_set.is_pattern_search?
         pattern_tags
       elsif post_set.is_tag_subscription?
         post_set.tag_subscription_tags
@@ -41,12 +39,6 @@ module PostSetPresenters
       Tag.name_matches(post_set.tag_string).all(:select => "name", :limit => Danbooru.config.tag_query_limit, :order => "post_count DESC").map(&:name)
     end
 
-    def suggested_tags
-      if post_set.tag_string.length >= 3
-        Tag.name_matches("*#{post_set.tag_string}*").where("post_count > 0").all(:select => "name", :limit => Danbooru.config.tag_query_limit, :order => "post_count DESC").map(&:name)
-      end
-    end
-
     def related_tags_for_group
       RelatedTagCalculator.calculate_from_sample_to_array(post_set.tag_string).map(&:first)
     end