chore(editor): move helper to playground (#9498)

blocksuite/presets/src/helpers/index.ts

@@ -1,21 +0,0 @@
-import { AffineSchemas } from '@blocksuite/blocks/schemas';
-import { DocCollection, Schema } from '@blocksuite/store';
-
-export function createEmptyDoc() {
-  const schema = new Schema().register(AffineSchemas);
-  const collection = new DocCollection({ schema });
-  collection.meta.initialize();
-  const doc = collection.createDoc();
-
-  return {
-    doc,
-    init() {
-      doc.load();
-      const rootId = doc.addBlock('affine:page', {});
-      doc.addBlock('affine:surface', {}, rootId);
-      const noteId = doc.addBlock('affine:note', {}, rootId);
-      doc.addBlock('affine:paragraph', {}, noteId);
-      return doc;
-    },
-  };
-}

blocksuite/presets/src/index.ts

@@ -2,7 +2,6 @@ import '@blocksuite/affine-block-surface/effects';
 
 export * from './editors';
 export * from './fragments';
-export * from './helpers';
 
 const env =
   typeof globalThis !== 'undefined'