* lib/rexml/rexml.rb: removed doubled constant.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13096 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/rexml.rb

@@ -23,8 +23,7 @@ module REXML
   COPYRIGHT = "Copyright © 2001-2007 Sean Russell <ser@germane-software.com>"
   DATE = "2007/209"
   VERSION = "3.1.7.1"
-  REVISION = "$Revision: 1270$".gsub(/\$Revision:|\$/,'').strip
-  REVISION = "$Revision$".gsub(/\$Revision:|\$/,'').strip
+  REVISION = %w"$Revision$"[1]
 
   Copyright = COPYRIGHT
   Version = VERSION