PLANET-7656 Prepare for WordPress 6.7 upgrade

The core Posts List variation of the Query Loop block has been removed so we don't need to unregister it anymore

assets/src/editorIndex.js

@@ -14,9 +14,6 @@ import {registerBlockVariations} from './block-variations';
 import {registerActionButtonTextBlock} from './blocks/ActionCustomButtonText';
 
 wp.domReady(() => {
-  // Make sure to unregister the posts-list native variation before registering planet4-blocks/posts-list
-  wp.blocks.unregisterBlockVariation('core/query', 'posts-list');
-
   // Blocks
   registerTableOfContentsBlock();
   registerColumnsBlock();