* Refactor iqdb response collection

app/logical/iqdb/download.rb

@@ -14,7 +14,7 @@ module Iqdb
 
     def find_similar
       if Danbooru.config.iqdb_hostname_and_port
-        @matches = Iqdb::Server.new(*Danbooru.config.iqdb_hostname_and_port).query(3, @download.file_path).matches
+        @matches = Iqdb::Server.default.query(3, @download.file_path).matches
       end
     end
   end

app/logical/iqdb/responses/collection.rb

@@ -2,7 +2,8 @@ module Iqdb
   module Responses
     class Collection
       attr_reader :responses
-      delegate :each, :empty?, :any?, :to => :matches
+      include Enumerable
+      delegate :<=>, :each, :to => :matches
       
       def initialize(response_string)
         @responses = response_string.split(/\n/).map do |string|

app/logical/iqdb/server.rb

@@ -49,15 +49,6 @@ module Iqdb
       end
     end
 
-    def similar(post_id, results, flags = FLAG_DISCARD_COMMON_COEFFS)
-      request do
-        hex_id = post_id.to_s(16)
-        socket.puts "sim 0 #{flags} #{results} #{hex_id}"
-        socket.puts "done"
-        responses = Responses::Collection.new(socket.read)
-      end
-    end
-
     def query(results, filename, flags = FLAG_DISCARD_COMMON_COEFFS)
       request do
         socket.puts "query 0 #{flags} #{results} #{filename}"