Doing some cleanup.

third_party/docbook-xsl-1.78.0/params/graphic.default.extension.xml

Index: third_party/docbook-xsl-1.78.0/params/graphic.default.extension.xml
diff --git a/third_party/docbook-xsl-1.78.0/params/graphic.default.extension.xml b/third_party/docbook-xsl-1.78.0/params/graphic.default.extension.xml
deleted file mode 100644
index 93f2983a84a1b19ad23d6593ddc868403d495822..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/params/graphic.default.extension.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="graphic.default.extension">
-<refmeta>
-<refentrytitle>graphic.default.extension</refentrytitle>
-<refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
-</refmeta>
-<refnamediv>
-<refname>graphic.default.extension</refname>
-<refpurpose>Default extension for graphic filenames</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-<src:fragment xml:id="graphic.default.extension.frag"><xsl:param name="graphic.default.extension"/></src:fragment>
-</refsynopsisdiv>
-
-<refsection><info><title>Description</title></info>
-
-<para>If a <tag>graphic</tag> or <tag>mediaobject</tag>
-includes a reference to a filename that does not include an extension,
-and the <tag class="attribute">format</tag> attribute is
-<emphasis>unspecified</emphasis>, the default extension will be used.
-</para>
-
-</refsection>
-</refentry>