clean-up.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclude-result-prefixes="xs" version="2.0"
    xmlns="http://www.tei-c.org/ns/1.0"
    xpath-default-namespace="http://www.tei-c.org/ns/1.0">

    <xsl:template match="@* | node()">
        <xsl:copy>
            <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="body[not(normalize-space(.))]"/>
    <xsl:template match="closer[not(normalize-space(.))]"/>
    <xsl:template match="front[not(normalize-space(.))]"/>
    <xsl:template match="head[not(normalize-space(.))]"/>
    <xsl:template match="l[not(normalize-space(.))]"/>
    <xsl:template match="sp[not(normalize-space(.))]"/>
    <xsl:template match="speaker[not(normalize-space(.))]"/>
    <xsl:template match="stage[not(normalize-space(.))]"/>
    <xsl:template match="text[not(normalize-space(.))]"/>
</xsl:stylesheet>