unicmp and coll operators don't require "use experiment"

[titsuki]

The problem

https://docs.perl6.org/language/experimental says:

use experimental :collation;
Allows the use of the unicmp and coll operators. 

However, recent rakudo doesn't require this pragma:

$ perl6 -e "say ('a', 'Z').collate; # (a Z) "
(a Z)
$ perl6 --version
This is Rakudo version 2018.03-129-g7572983a4 built on MoarVM version 2018.03-35-gafdcad424
implementing Perl 6.c.

Suggestions

Make this section up-to-date and move them to the proper page.

[JJ]

In fact, they stopped being so since 2017.19 Thanks for the head up.

[fluca1978]

It was release 2018.09 of course...

[JJ]

see #1507