Remove option that is no longer needed now that PHP 8.5 is supported

Author: sebastianbergmann

.php-cs-fixer.dist.php

@@ -27,7 +27,6 @@
 
 $config = new PhpCsFixer\Config;
 $config->setFinder($finder)
-    ->setUnsupportedPhpVersionAllowed(true)
     ->setRiskyAllowed(true)
     ->setRules([
         'align_multiline_comment' => true,