Doing some cleanup.

third_party/docbook-xsl-1.78.0/params/overlay.xml

Index: third_party/docbook-xsl-1.78.0/params/overlay.xml
diff --git a/third_party/docbook-xsl-1.78.0/params/overlay.xml b/third_party/docbook-xsl-1.78.0/params/overlay.xml
deleted file mode 100644
index f955b23a77e9061785e52db0bb1657cf8cd47695..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/params/overlay.xml
+++ /dev/null
@@ -1,32 +0,0 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
-          xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-          version="5.0" xml:id="overlay">
-<refmeta>
-<refentrytitle>overlay</refentrytitle>
-<refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
-</refmeta>
-<refnamediv>
-<refname>overlay</refname>
-<refpurpose>Overlay footer navigation?</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-<src:fragment xml:id="overlay.frag">
-<xsl:param name="overlay" select="0"/>
-</src:fragment>
-</refsynopsisdiv>
-
-<refsection><info><title>Description</title></info>
-
-<para>If non-zero, JavaScript is added to the slides to make the
-bottom navigation appear at the bottom of each page. This option and
-<link linkend="multiframe">multiframe</link> are mutually exclusive.</para>
-
-<para>If this parameter is zero, the bottom navigation simply appears
-below the content of each slide.</para>
-
-</refsection>
-</refentry>