Doing some cleanup.

third_party/docbook-xsl-1.78.0/params/slidy.path.prefix.xml

Index: third_party/docbook-xsl-1.78.0/params/slidy.path.prefix.xml
diff --git a/third_party/docbook-xsl-1.78.0/params/slidy.path.prefix.xml b/third_party/docbook-xsl-1.78.0/params/slidy.path.prefix.xml
deleted file mode 100644
index f3da6f356a29a3e9825717b4a845146bf571a033..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/params/slidy.path.prefix.xml
+++ /dev/null
@@ -1,29 +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="slidy.path.prefix">
-<refmeta>
-<refentrytitle>slidy.path.prefix</refentrytitle>
-<refmiscinfo class="other" otherclass="datatype">uri</refmiscinfo>
-</refmeta>
-<refnamediv>
-<refname>slidy.path.prefix</refname>
-<refpurpose>Specifies the path to Slidy files</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <src:fragment xml:id="slidy.path.prefix.frag">
-    <xsl:param name="slidy.path.prefix">files/slidy/</xsl:param>
-  </src:fragment>
-</refsynopsisdiv>
-
-<refsection><info><title>Description</title></info>
-
-<para>This parameter specifies the path where Slidy CSS and
-  JavaScript files reside. All the CSS and JavaScript paths
-  will be generated relative to this directory.</para>
-
-</refsection>
-</refentry>