xml2pmx: unbundle from texlive_core

The category is an estimation and not derived from Gentoo, which doesn't have this as a separate package.

app-text/texlive_core/texlive_core-2024.2.recipe

@@ -432,7 +432,6 @@ PROVIDES="
 	cmd:xetex_unsafe
 	cmd:xhlatex
 	cmd:xindex
-	cmd:xml2pmx
 	cmd:xmltex
 	cmd:yplan
 	lib:libkpathsea$secondaryArchSuffix = $libkpathseaVersionCompat
@@ -626,7 +625,6 @@ defineDebugInfoPackage texlive_core$secondaryArchSuffix \
 	$prefix/bin/wovp2ovf \
 	$prefix/bin/xdvipdfmx \
 	$prefix/bin/xetex \
-	$prefix/bin/xml2pmx \
 	$libDir/libkpathsea.so.$libkpathseaVersion \
 	$libDir/libptexenc.so.$libptexencVersion \
 	$libDir/libsynctex.so.$libsynctexVersion \
@@ -813,6 +811,7 @@ BUILD()
 		--disable-ps2eps \
 		--disable-t1utils \
 		--disable-vlna \
+		--disable-xml2pmx \
 		--build=$HOST --host=$HOST
 
 	# and make the damn thing!