diff --git a/core/lib/Drupal/Core/Field/PluginSettingsBase.php b/core/lib/Drupal/Core/Field/PluginSettingsBase.php
index 5b72033..c35d03b 100644
--- a/core/lib/Drupal/Core/Field/PluginSettingsBase.php
+++ b/core/lib/Drupal/Core/Field/PluginSettingsBase.php
@@ -8,7 +8,6 @@
 namespace Drupal\Core\Field;
 
 use Drupal\Core\Plugin\PluginBase;
-use Drupal\Component\Plugin\Factory\DefaultFactory;
 
 /**
  * Base class for the Field API plugins.
@@ -71,25 +70,13 @@ public function getSetting($key) {
    * Merges default settings values into $settings.
    */
   protected function mergeDefaults() {
-    $this->settings += $this->getDefaultSettings();
+    $this->settings += static::settings();
     $this->defaultSettingsMerged = TRUE;
   }
 
   /**
    * {@inheritdoc}
    */
-  public function getDefaultSettings() {
-    $definition = $this->getPluginDefinition();
-    if (!empty($plugin_definition['class'])) {
-      $plugin_class = DefaultFactory::getPluginClass($this->getPluginId(), $definition);
-      return $plugin_class::settings();
-    }
-    return array();
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function setSettings(array $settings) {
     $this->settings = $settings;
     $this->defaultSettingsMerged = FALSE;
diff --git a/core/lib/Drupal/Core/Field/PluginSettingsInterface.php b/core/lib/Drupal/Core/Field/PluginSettingsInterface.php
index e33c57d..8b588ec 100644
--- a/core/lib/Drupal/Core/Field/PluginSettingsInterface.php
+++ b/core/lib/Drupal/Core/Field/PluginSettingsInterface.php
@@ -50,14 +50,6 @@ public function getSettings();
   public function getSetting($key);
 
   /**
-   * Returns the default settings for the plugin.
-   *
-   * @return array
-   *   The array of default setting values, keyed by setting names.
-   */
-  public function getDefaultSettings();
-
-  /**
    * Sets the settings for the plugin.
    *
    * @param array $settings