Purge sfio support, which has been broken for a decade.

The last Perl release that built with -Dusesfio was v5.8.0, and even that
failed many regression tests. Every subsequent release fails to build, and
in the decade that has passed we have had no bug reports about this. So it's
safe to delete all the code. The Configure related code will be purged in a
subsequent commit.

2 references to sfio intentionally remain in fakesdio.h and nostdio.h, as
these appear to be for using its stdio API-compatibility layer.

1 files changed, 2 insertions, 2 deletions

diff --git a/configpm b/configpm
index fbc471009d..cf105baf58 100755
--- a/configpm
+++ b/configpm
@@ -72,13 +72,13 @@ my %Extensions = map {($_,$_)}
 
 # Could use a map to add ".h", but I suspect that it's easier to use literals,
 # so that anyone using grep will find them
-# This is the list from MM_VMS, plus pad.h, parser.h, perlsfio.h utf8.h
+# This is the list from MM_VMS, plus pad.h, parser.h, utf8.h
 # which it installs. It *doesn't* install perliol.h - FIXME.
 my @header_files = qw(EXTERN.h INTERN.h XSUB.h av.h config.h cop.h cv.h
 		      embed.h embedvar.h form.h gv.h handy.h hv.h hv_func.h intrpvar.h
 		      iperlsys.h keywords.h mg.h nostdio.h op.h opcode.h
 		      pad.h parser.h patchlevel.h perl.h perlio.h perlsdio.h
-		      perlsfio.h perlvars.h perly.h pp.h pp_proto.h proto.h
+		      perlvars.h perly.h pp.h pp_proto.h proto.h
 		      regcomp.h regexp.h regnodes.h scope.h sv.h thread.h utf8.h
 		      util.h);