chws.rb in irb-1.6.3

- old
+ new

@@ -1,14 +1,8 @@
 # frozen_string_literal: false
 #
 #   change-ws.rb -
-#   	$Release Version: 0.9.6$
-#   	$Revision$
 #   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
-#
-# --
-#
-#
 #
 
 require_relative "nop"
 require_relative "../ext/change-ws"
 