Doing some cleanup.

third_party/docbook-xsl-1.78.0/html/autoidx-ng.xsl

Index: third_party/docbook-xsl-1.78.0/html/autoidx-ng.xsl
diff --git a/third_party/docbook-xsl-1.78.0/html/autoidx-ng.xsl b/third_party/docbook-xsl-1.78.0/html/autoidx-ng.xsl
deleted file mode 100644
index 9407b5cf98f3cd3383706a1bd8fc10423240c610..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/html/autoidx-ng.xsl
+++ /dev/null
@@ -1,20 +0,0 @@
-<?xml version="1.0"?>
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-                version="1.0">
-
-<!-- ********************************************************************
-     $Id: autoidx-ng.xsl 6910 2007-06-28 23:23:30Z xmldoc $
-     ********************************************************************
-
-     This file is part of the DocBook XSL Stylesheet distribution.
-     See ../README or http://docbook.sf.net/ for copyright
-     copyright and other information.
-
-     ******************************************************************** -->
-
-<!-- You should have this directly in your customization file. -->
-<!-- This file is there only to retain backward compatibility. -->
-<xsl:import href="autoidx-kosek.xsl"/>
-<xsl:param name="index.method">kosek</xsl:param>
-
-</xsl:stylesheet>