Document IO::Handle.printf

Remove paragraph about workarounds

doc/Type/IO/Handle.pod6

@@ -201,32 +201,18 @@ $fh.close;
 
 =head2 method printf
 
-This method is mostly identical to the C library C<printf> and
-sprintf functions.  The only difference between the two functions is
-that C<sprintf> returns a string while the C<printf> function writes
-to a file.  See L<sub sprintf|https://docs.perl6.org/type/Str#sub_sprintf> for details about
-the Perl 6 C<$format> implementation
+    method printf(IO::Handle:D: Cool $format, *@args)
 
-Note that currently C<printf> is not a method for C<IO::Handle>, but
-its effect may be duplicated with a work-around using C<sub sprintf>
-and methods C<print> or C<say>.  For example:
+Formats a string based on the given format and arguments and C<.print>s the
+result into the filehandle.
+See L<sub sprintf|https://docs.perl6.org/type/Str#sub_sprintf> for details
+on acceptable format directives.
 
 =for code :skip-test
 my $fh = open 'path/to/file', :w;
-$fh.print(sprintf("%d\n", 32));
+$fh.printf: "The value is %d\n", 32;
 $fh.close;
 
-The C<say> method (see below) may be used for an automatic ending
-newline:
-
-=for code :skip-test
-my $fh = open 'path/to/file', :w;
-$fh.say(sprintf("%d", 32));
-$fh.close;
-
-See L<sub sprintf|https://docs.perl6.org/type/Str#sub_sprintf>
-for details about formatting and more examples.
-
 =head2 method say
 
     method say(IO::Handle:D: |)