* docs/html/Makefile: Follow up to libstdc++/14991, remove target.

From-SVN: r128909

libstdc++-v3/ChangeLog

+2007-09-29  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	* docs/html/Makefile: Follow up to libstdc++/14991, remove target.
+
 2007-09-28  Benjamin Kosnik  <bkoz@redhat.com>
 
 	* include/parallel/algorithmfwd.h: Spacing.

libstdc++-v3/docs/html/Makefile

@@ -31,10 +31,6 @@ faq/index.txt: faq/index.html
 17_intro/porting.html: 17_intro/porting.texi
 	${MAKEINFO} -I ${INC} --html --no-split $< -o $@
 
-# known to work under RH; this can be cleaned up later if needed
-17_intro/porting-howto.html: 17_intro/porting-howto.xml
-	xltproc -o $@ /usr/share/xml/docbook/xsl-stylesheets-1.48-2/html/docbook.xsl $<
-
 17_intro/confdeps.png: 17_intro/confdeps.dot
 	dot -Tpng -o $@ $<