This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
You will have to use a template with xsl:copy constructas a generic template for all the elements. Then for the xs:simpleType element, you should write an empty template.
<xsl:template match="xs:simpleType"> <!-- do nothing here --> </xsl:template>
This would consume all the simple Type element (and its content). Thanks.