Use rector for test files only

Author: funivan

rector.php

@@ -10,10 +10,7 @@
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->paths([
         __DIR__ . '/test',
-        __DIR__ . '/src',
     ]);
 
-
-    // define sets of rules
-    $rectorConfig->sets([LevelSetList::UP_TO_PHP_81, PHPUnitSetList::PHPUNIT_100,]);
+    $rectorConfig->sets([PHPUnitSetList::PHPUNIT_100,]);
 };