Leave the emtpy info and lib/sys in extraclean

* lib/Makefile.in: Ditto.

* Makefile.in (extraclean): Don't use GNU-specific rmdir; just
leave the empty directory be.

Makefile.in

@@ -942,7 +942,6 @@ extraclean: $(extraclean_dirs:=_extraclean)
 	-rm -f config-tmp-* aclocal.m4 configure
 	-rm -f ./*~ \#* etc/refcards/emacsver.tex doc/emacs/emacsver.texi
 	-rm -f info/*.info info/dir
-	-[ -d info ] && rmdir --ignore-fail-on-non-empty info
 
 # The src subdir knows how to do the right thing
 # even when the build directory and source dir are different.

lib/Makefile.in

@@ -127,7 +127,6 @@ distclean bootstrap-clean: mostlyclean
 maintainer-clean: distclean
 	rm -f TAGS gnulib.mk
 extraclean: distclean
-	-[ -d sys ] && rmdir --ignore-fail-on-non-empty sys
 
 .PHONY: mostlyclean clean distclean bootstrap-clean maintainer-clean