[v6.d REVIEW] Remove EVAL --encoding respectation

This feature didn't make it into the language and was removed from
Rakudo in
rakudo/rakudo@31b19d0

Author: zoffixznet

doc/Type/Cool.pod6

@@ -1412,9 +1412,8 @@ sub EVAL($code where Cool|Blob, :$lang = 'perl6')
 The method form calls subroutine form with invocant as C<$code>, passing
 along named args, if any. Subroutine form coerces L<Cool> C<$code> to
 L<Str>. If C<$code> is a L<Blob>, it'll be processed using the same
-encoding as the C<$lang> compiler would: for C<perl6>, uses the encoding
-specified via C<--encoding> command line argument, or C<utf-8> if none
-were given; for C<Perl5>, processes using same rules as C<perl>.
+encoding as the C<$lang> compiler would: for C<perl6> C<$lang>, uses C<utf-8>;
+for C<Perl5>, processes using the same rules as C<perl>.
 
 This works as-is with a literal string parameter. More complex input,
 such as a variable or string with embedded code, is illegal by default.