remove dead code (#8698)

Author: cmangeat

schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/convert/ISO19139/fromISO19139.xsl

@@ -103,10 +103,6 @@
         root element (MD_Metadata or MI_Metadata)
         -->
         <xsl:for-each select="//(gmd:MD_Metadata|gmi:MI_Metadata|gfcold:FC_FeatureCatalogue)">
-            <xsl:variable name="nameSpacePrefix">
-                <xsl:call-template name="getNamespacePrefix"/>
-            </xsl:variable>
-
             <xsl:variable name="isFeatureCatalogue"
                           select="local-name() = 'FC_FeatureCatalogue'"
                           as="xs:boolean"/>

schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/convert/fromISO19139-with-languages-refactor.xsl

@@ -43,10 +43,6 @@
   <xsl:template match="/" priority="999">
     <xsl:variable name="iso19115Record">
       <xsl:for-each select="//(gmd:MD_Metadata|gmi:MI_Metadata)">
-        <xsl:variable name="nameSpacePrefix">
-          <xsl:call-template name="getNamespacePrefix"/>
-        </xsl:variable>
-
         <xsl:element name="mdb:MD_Metadata">
           <xsl:call-template name="add-iso19115-3.2018-namespaces"/>