minor #2641 Cookbook - remove information about levels (keradus)
minor #2641 Cookbook - remove information about levels (keradus)

This PR was merged into the 2.1 branch.

Discussion
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Cookbook - remove information about levels

Commits
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2a62c38 Cookbook - remove information about levels

Slamdunk/PHP-CS-Fixer,lucasmichot/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,SpacePossum/PHP-CS-Fixer,Slamdunk/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,lucasmichot/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer,Soullivaneuh/PHP-CS-Fixer,keradus/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,keradus/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,SpacePossum/PHP-CS-Fixer,Soullivaneuh/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer