Fix PHPStan @return unused type return.type on RectorInterface

Author: samsonasik

phpstan.neon

@@ -354,5 +354,3 @@ parameters:
         -
             path: rules/Renaming/Rector/Name/RenameClassRector.php
             identifier: return.type
-
-        - '#Method Rector\\(.*?)Rector\:\:refactor\(\) never returns \d so it can be removed from the return type#'

src/Contract/Rector/RectorInterface.php

@@ -5,7 +5,6 @@
 namespace Rector\Contract\Rector;
 
 use PhpParser\Node;
-use PhpParser\NodeTraverser;
 use PhpParser\NodeVisitor;
 use Symplify\RuleDocGenerator\Contract\DocumentedRuleInterface;
 
@@ -21,7 +20,7 @@ public function getNodeTypes(): array;
 
     /**
      * Process Node of matched type
-     * @return Node|Node[]|null|NodeTraverser::*
+     * @return Node|Node[]|null|int
      */
     public function refactor(Node $node);
 }