Remove duplicate declaration

On line 33 and 37 there is a duplicate declaration of  $this->formKey.

Author: gfernandes410

app/code/Magento/Backend/Block/Page/RequireJs.php

@@ -29,7 +29,6 @@ public function __construct(
         \Magento\Framework\Data\Form\FormKey $formKey,
         array $data = []
     ) {
-        $this->formKey = $formKey;
         parent::__construct(
             $context,
             $data