arabic/arabtex: Remove commented texmf

After 6 months of commit there were no comments from the maintainer or
any bugs reported about the removal of texmf which means this port does
not use texmf at all.

Sponsored by:	Nepustil
Approved by:	portmgr (blanket)

arabic/arabtex/Makefile

@@ -12,7 +12,7 @@ WWW=		http://www2.informatik.uni-stuttgart.de/ivi/bs/research/arab_e.htm
 LICENSE=	LPPL10
 
 USES=		tar:tgz tex
-USE_TEX=	base # texmf
+USE_TEX=	base
 
 NO_WRKSUBDIR=	yes
 NO_BUILD=	yes