Remove unused parameter in DerivableContextSourceBase::listDerivableContexts()

src/Plugin/UiPatterns/Source/DerivableContextSourceBase.php

@@ -272,13 +272,10 @@ abstract class DerivableContextSourceBase extends SourcePluginBase {
   /**
    * List source definitions.
    *
-   * @param array<string, array<string, \Drupal\Core\Plugin\Context\ContextInterface>> $plugins_context_overrides
-   *   Specific plugin contexts.
-   *
    * @return array
    *   Definitions of blocks
    */
-  private function listDerivableContexts(array $plugins_context_overrides = []) : array {
+  private function listDerivableContexts() : array {
     if ($this->derivableContexts) {
       return $this->derivableContexts;
     }