Issue #1874564 by andypost: Fix access handling SystemMenuBlock::access().

core/modules/system/lib/Drupal/system/Plugin/Block/SystemMenuBlock.php

@@ -22,14 +22,6 @@
  */
 class SystemMenuBlock extends BlockBase {
 
-  /**
-   * {@inheritdoc}
-   */
-  public function access(AccountInterface $account) {
-    $derivative = $this->getDerivativeId();
-    return ($account->isAuthenticated() || in_array($derivative, array('main', 'tools', 'footer')));
-  }
-
   /**
    * {@inheritdoc}
    */