makeFontsConf: clean up

The use of the argument was removed in 2016 but its definition was left behind.

cd2948a72e

pkgs/development/libraries/fontconfig/make-fonts-conf.nix

@@ -9,7 +9,6 @@ runCommand "fonts.conf"
   }
   ''
     xsltproc --stringparam fontDirectories "$fontDirectories" \
-      --stringparam fontconfig "${fontconfig.out}" \
       --path ${fontconfig.out}/share/xml/fontconfig \
       ${./make-fonts-conf.xsl} ${fontconfig.out}/etc/fonts/fonts.conf \
       > $out

pkgs/development/libraries/fontconfig/make-fonts-conf.xsl

@@ -15,7 +15,6 @@
   <xsl:output method='xml' encoding="UTF-8" doctype-system="fonts.dtd" />
 
   <xsl:param name="fontDirectories" />
-  <xsl:param name="fontconfig" />
 
   <xsl:template match="/fontconfig">