OEL-1227: Make 'oe_whitelabel' the default theme in test.

tests/src/Functional/WhitelabelBrowserTestBase.php

@@ -14,24 +14,6 @@ abstract class WhitelabelBrowserTestBase extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected $defaultTheme = 'stark';
-
-  /**
-   * {@inheritdoc}
-   */
-  protected function setUp(): void {
-    parent::setUp();
-
-    // Enable and set OpenEuropa Theme as default.
-    \Drupal::service('theme_installer')->install(['oe_whitelabel']);
-    \Drupal::configFactory()
-      ->getEditable('system.theme')
-      ->set('default', 'oe_whitelabel')
-      ->save();
-
-    // Rebuild the ui_pattern definitions to collect the ones provided by
-    // oe_whitelabel itself.
-    \Drupal::service('plugin.manager.ui_patterns')->clearCachedDefinitions();
-  }
+  protected $defaultTheme = 'oe_whitelabel';
 
 }