Remove smile in native call array documentation.

Author: fluca1978

doc/Language/nativecall.pod6

@@ -239,7 +239,7 @@ RenderBarChart('Weights (kg)', 3, @titles, @values);
 Note that binding was used to C<@titles>, I<not> assignment! If you assign, you
 are putting the values into a Perl 6 array, and it will not work out. If this
 all freaks you out, forget you ever knew anything about the C<@> sigil and just
-use C<$> all the way when using NativeCall. :-)
+use C<$> all the way when using NativeCall.
 
     use NativeCall;
     my $titles = CArray[Str].new;
@@ -281,7 +281,7 @@ something in the library API tells you this (for example, you know that when
 you see a null element, you should read no further). Note that NativeCall can
 offer you no protection whatsoever here - do the wrong thing, and you will get a
 segfault or cause memory corruption. This isn't a shortcoming of NativeCall, it's
-the way the big bad native world works. Scared? Here, have a hug. Good luck! :-)
+the way the big bad native world works. Scared? Here, have a hug. Good luck!
 
 =head1 Structs