Access: Do not die for no good reason

access/graph.pl

@@ -42,7 +42,7 @@ if (@ARGV && $ARGV[0] eq "--graph") {
 my $dir = $ARGV[0] // 'out';
 -d $dir or mkdir $dir or die "Cannot create $dir";
 chdir $dir or die;
-for my $f ("access.c", "Makefile", "parse_op") {
+for my $f ("access.c", "Makefile") {
 	-f $f or symlink "../$f", $f or die;
 }