Doing some cleanup.

third_party/docbook-xsl-1.78.0/params/custom.css.source.xml

Index: third_party/docbook-xsl-1.78.0/params/custom.css.source.xml
diff --git a/third_party/docbook-xsl-1.78.0/params/custom.css.source.xml b/third_party/docbook-xsl-1.78.0/params/custom.css.source.xml
deleted file mode 100644
index 24278ad57f757ae13678e3845e6a8e66bb395d79..0000000000000000000000000000000000000000
--- a/third_party/docbook-xsl-1.78.0/params/custom.css.source.xml
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@@ -1,119 +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="custom.css.source">
-  <refmeta>
-    <refentrytitle>custom.css.source</refentrytitle>
-    <refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
-  </refmeta>
-  <refnamediv>
-    <refname>custom.css.source</refname>
-    <refpurpose>Name of a custom CSS input file</refpurpose>
-  </refnamediv>
-
-  <refsynopsisdiv>
-    <src:fragment xml:id="custom.css.source.frag"><xsl:param name="custom.css.source"></xsl:param></src:fragment>
-  </refsynopsisdiv>
-
-  <refsection><info><title>Description</title></info>
-
-<para>The <parameter>custom.css.source</parameter>
-parameter enables you to add CSS styles to DocBook's
-HTML output.</para>
-
-<para>The parameter
-specifies the name of a file containing custom
-CSS styles.  The file must be a well-formed XML file that
-consists of a single <tag>style</tag> root
-element that contains CSS styles as its text content.
-For example:</para>
-<programlisting><![CDATA[<?xml version="1.0"?>
-<style>
-h2 {
-  font-weight: bold;
-  color: blue;
-}
-...
-</style>
-]]></programlisting>
-
-<para>The filename specified by the parameter
-should have a <literal>.xml</literal>
-filename suffix, although that is not required.
-The default value of this parameter is blank.</para>
-
-<para>If <parameter>custom.css.source</parameter> is not blank, then
-the stylesheet takes the following actions.
-These actions take place regardless of the value of
-the <parameter>make.clean.html</parameter> parameter.</para>
-
-<orderedlist>
-  <listitem>
-    <para>The stylesheet uses the XSLT <literal>document()</literal>
-    function to open the file specified by the parameter and
-    load it into a variable.</para>
-  </listitem>
-  <listitem>
-    <para>The stylesheet forms an output pathname consisting of the
-    value of the <parameter>base.dir</parameter> parameter (if it is set)
-    and the value of <parameter>custom.css.source</parameter>,
-    with the <literal>.xml</literal> suffix stripped off.
-    </para>
-  </listitem>
-  <listitem>
-    <para>The stylesheet removes the <tag>style</tag>
-    wrapper element and writes just the CSS text content to the output file.</para>
-  </listitem>
-  <listitem>
-    <para>The stylesheet adds a <tag>link</tag> element to the
-    HTML <tag>HEAD</tag> element to reference this external CSS stylesheet.
-    For example:
-    <programlisting>&lt;link rel="stylesheet" href="custom.css" type="text/css"&gt;
-    </programlisting>
-    </para>
-  </listitem>
-</orderedlist>
-
-
-
-<para>If the <parameter>make.clean.html</parameter> parameter is nonzero
-(the default is zero),
-and if the <parameter>docbook.css.source</parameter> parameter
-is not blank (the default is not blank),
-then the stylesheet will also generate a default CSS file
-and add a <tag>link</tag> tag to reference it.
-The <tag>link</tag> to the custom CSS comes after the 
-<tag>link</tag> to the default, so it should cascade properly
-in most browsers.
-If you do not want two <tag>link</tag> tags, and
-instead want your custom CSS to import the default generated
-CSS file, then do the following:
-</para>
-
-<orderedlist>
-  <listitem>
-    <para>Add a line like the following to your custom CSS source file:</para>
-    <programlisting>@import url("docbook.css")
-    </programlisting>
-  </listitem>
-  <listitem>
-    <para>Set the <parameter>docbook.css.link</parameter> parameter 
-    to zero. This will omit the <tag>link</tag> tag
-    that references the default CSS file.</para>
-  </listitem>
-</orderedlist>
-
-<para>If you set <parameter>make.clean.html</parameter> to nonzero but
-you do not want the default CSS generated, then also set
-the <parameter>docbook.css.source</parameter> parameter to blank.
-Then no default CSS will be generated, and so
-all CSS styles must come from your custom CSS file.</para>
-
-<para>You can use the <parameter>generate.css.header</parameter>
-parameter to instead write the CSS to each HTML <tag>HEAD</tag>
-element in a <tag>style</tag> tag instead of an external CSS file.</para>
-
-  </refsection>
-</refentry>