Removed NodeNameSet class

lib/oga.rb

@@ -7,7 +7,6 @@ require_relative 'oga/version'
 require_relative 'oga/oga'
 require_relative 'oga/lru'
 require_relative 'oga/entity_decoder'
-require_relative 'oga/node_name_set'
 require_relative 'oga/blacklist'
 require_relative 'oga/whitelist'
 

lib/oga/node_name_set.rb

@@ -1,18 +0,0 @@
-module Oga
-  ##
-  # Class for storing (HTML) element names in a set and automatically adding
-  # their uppercase equivalents.
-  #
-  # @api private
-  #
-  class NodeNameSet < Set
-    ##
-    # @param [Array] values
-    #
-    def initialize(values = [])
-      values = values + values.map(&:upcase)
-
-      super(values)
-    end
-  end # NodeNameSet
-end # Oga