Deprecation messages now work on rakudo-moar

Additionally, replace the say2 sub here with note, which fulfills the
same purpose.

src/core/Deprecations.pm

@@ -57,18 +57,12 @@ sub DEPRECATED ($alternative) {
     $what.callsites{$callsite.file}{$callsite.line}++;
 } 
 
-# XXX Explodes on Moar so far.
-#?if !moar
 END {
     if my $message = Deprecation.report {
-        my Mu $err := nqp::getstderr();
-        my sub say2 ($s) { nqp::printfh($err, "$s\n") }
-
-        say2 $message;
-        say2 "Please contact the author to have these calls to deprecated code adapted,";
-        say2 "so that this message will disappear!";
+        note $message;
+        note "Please contact the author to have these calls to deprecated code adapted,";
+        note "so that this message will disappear!";
     }
 }
-#?endif
 
 # vim: ft=perl6 expandtab sw=4