Remove line that was commented out.

Author: stefanvermaas

lib/active_resource/base.rb

@@ -1078,7 +1078,6 @@ def exists?(id, options = {})
           response = connection.head(path, headers)
           (200..206).include? response.code.to_i
         end
-        # id && !find_single(id, options).nil?
       rescue ActiveResource::ResourceNotFound, ActiveResource::ResourceGone
         false
       end