Remove readme updates that break tests

packages/block-editor/README.md

@@ -124,21 +124,16 @@ Undocumented declaration.
 
 <a name="BlockPreview" href="#BlockPreview">#</a> **BlockPreview**
 
-BlockPreview renders a preview of a block or array of blocks.
+BlockPreview renders a preview given an array of blocks.
 
 _Parameters_
 
--   _blocks_ `Array|Object`: A block instance (object) or an array of blocks to be previewed.
--   _viewportWidth_ `Int`: Width of the preview container in pixels. Controls at what size the blocks will be rendered inside the preview. Default: 700.
+-   _props_ `Object`: Component props.
 
 _Returns_
 
 -   `WPElement`: Rendered element.
 
-_Related_
-
--   <https://github.com/WordPress/gutenberg/blob/master/packages/block-editor/src/components/block-preview/README.md>
-
 <a name="BlockSelectionClearer" href="#BlockSelectionClearer">#</a> **BlockSelectionClearer**
 
 Undocumented declaration.