[ci skip] PHP 8.0 is EOL

Following php/web-php#840, 670052c and php/web-qa#c7b24521eb1

Author: carusogabriel

docs/release-process.md

@@ -9,7 +9,6 @@ The release schedule for each version is published on the
 - [PHP 8.3](https://wiki.php.net/todo/php83)
 - [PHP 8.2](https://wiki.php.net/todo/php82)
 - [PHP 8.1](https://wiki.php.net/todo/php81)
-- [PHP 8.0](https://wiki.php.net/todo/php80)
 
 The PHP project publishes builds every two weeks.