shorten test case

Author: klausi

tests/Drupal/good/good.php

@@ -1992,13 +1992,6 @@ protected function getFallbackPluginId($plugin_id, array $configuration = []) {
  */
 class ConditionPluginCollection extends DefaultLazyPluginCollection {
 
-  /**
-   * An array of collected contexts for conditions.
-   *
-   * @var \Drupal\Component\Plugin\Context\ContextInterface[]
-   */
-  protected $conditionContexts = [];
-
   /**
    * {@inheritdoc}
    *