[t/spec] unfudge a test for $/ after .parse

git-svn-id: http://svn.pugscode.org/pugs@30562 c213334d-75ef-0310-aa23-eaa082d1ae64

S05-grammar/protoregex.t

@@ -18,7 +18,6 @@ ok (my $match = Alts.parse('foo')), 'can parse with proto regexes (1)';
 is $match, 'foo', 'and matched the full string';
 is $match<alt>, 'foo', 'got the right name of the capture';
 
-#?rakudo todo 'Grammar.parse($str) should set $/'
 is $/, 'foo', 'also works with $/';
 
 ok Alts.parse('bar'), 'can parse with second alternative';