Doing some cleanup.

third_party/docbook-xsl-1.78.0/params/slidy.duration.xml

Index: third_party/docbook-xsl-1.78.0/params/slidy.duration.xml
diff --git a/third_party/docbook-xsl-1.78.0/params/slidy.duration.xml b/third_party/docbook-xsl-1.78.0/params/slidy.duration.xml
deleted file mode 100644
index 6d81ddf27593d43bdbdcb196c6dab81294af63c9..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/params/slidy.duration.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.duration">
-<refmeta>
-<refentrytitle>slidy.duration</refentrytitle>
-<refmiscinfo class="other" otherclass="datatype">integer</refmiscinfo>
-</refmeta>
-<refnamediv>
-<refname>slidy.duration</refname>
-<refpurpose>Specifies the duration of the presentation</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <src:fragment xml:id="slidy.duration.frag">
-    <xsl:param name="slidy.duration">0</xsl:param>
-  </src:fragment>
-</refsynopsisdiv>
-
-<refsection><info><title>Description</title></info>
-
-<para>This parameter specifies the duration of the presentation
-  in minutes. A JavaScript clock will count down to help the
-  speaker in not running out of time. Can be disabled if set to 0.</para>
-
-</refsection>
-</refentry>