Update TestGenerator.php

Author: mohit-adobe

src/Magento/FunctionalTestingFramework/Util/TestGenerator.php

@@ -250,7 +250,6 @@ public function createAllTestFiles($testManifest = null, $testsToIgnore = null)
 
     /**
      * Throw exception if duplicate arguments found
-     * @param string     $fileContents
      * @param TestObject $testObject
      * @return void
      * @throws TestFrameworkException