Issue #3462845: Detach reference discivery from exportable plugins

Closes #3462845

src/EmeExportable/ExportablePluginInterface.php

@@ -60,22 +60,6 @@ interface ExportablePluginInterface {
    */
   public function getDestination(): array;
 
-  /**
-   * Returns the list of the objects needed to migrate the current object.
-   *
-   * @return \Drupal\eme\EmeObject[]
-   *   List of the EmeObjects needed to migrate the current object.
-   */
-  public function getDirectDependencies(): array;
-
-  /**
-   * List of the objects that require the current object to be migrated.
-   *
-   * @return \Drupal\eme\EmeObject[]
-   *   List of the EmeObjects that require the current object to be migrated.
-   */
-  public function getReverseDependencies(): array;
-
   /**
    * Returns the type of the exported object.
    *