cleanup redundant method

smart-blocks/smart_block.js

@@ -43,14 +43,6 @@ export class SmartBlock extends SmartEntity {
     // Else: Do nothing (may prune embeddings to save memory in future)
   }
 
-  /**
-   * Queues the block for saving via the source.
-   * @returns {void}
-   */
-  queue_save() {
-    this._queue_save = true;
-  }
-
   /**
    * Queues the entity for embedding.
    * @returns {void}