Remove p6lert / WWW::p6lert

The underlying repos are in archive state, so no development will
be done there.  Also, these modules are really obsolete Raku
infrastructure, which may get rebuilt some day but probably under
a different name.

The existsing versions will continue to be available from the REA.

META.list

@@ -535,7 +535,6 @@ https://raw.githubusercontent.com/raku-community-modules/IRC-Client-Plugin-Facto
 https://raw.githubusercontent.com/raku-community-modules/lingua-en-stem-porter/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/LN/74ce8c5d5db9f1459128a2eb182c9411b2746fc6/META6.json
 https://raw.githubusercontent.com/raku-community-modules/Mime-Types/master/META6.json
-https://raw.githubusercontent.com/raku-community-modules/p6lert/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/Raku-Parser/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/RakudoPrereq/07b21e3e62e975d9e9e05643eec0beba89076eed/META6.json
 https://raw.githubusercontent.com/raku-community-modules/Reminders/master/META6.json
@@ -548,7 +547,6 @@ https://raw.githubusercontent.com/raku-community-modules/Twitter/master/META6.js
 https://raw.githubusercontent.com/raku-community-modules/URI/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/Web-App-Ballet/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/WWW/master/META6.json
-https://raw.githubusercontent.com/raku-community-modules/WWW-P6lert/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/WWW-vlc-Remote/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/XML-Entity-HTML/master/META6.json
 https://raw.githubusercontent.com/raku-community-modules/YAML/master/META6.json