Remove HideWhenChildBlocks. This will be added on a separate branch

packages/block-editor/src/components/inner-blocks/README.md

@@ -123,7 +123,6 @@ Determines the placeholder behaviour when the Block is initially inserted. You m
 * For convenience two predefined appender components are exposed on `InnerBlocks` which can be consumed within the render function:
 	- `<InnerBlocks.ButtonBlockAppender />` -  display a `+` (plus) icon inside a box which fills the Block preview. No default Block is inserted. Clicking the appender reveals the Block picker UI.
 	- `<InnerBlocks.DefaultBlockAppender />` - provides the default "auto-insert" functionality described above under `default`.
-	- `<InnerBlocks.HideWhenChildBlocks />` - will only render `children` if the instance of `InnerBlocks` has no child blocks (typically only at point of first insertion). Once a child Block is added the `children` will not be rendered (see example usage below)
 * Consumers are also free to pass any valid render function which provides full 
 flexibility to define a bespoke appender
 
@@ -137,15 +136,6 @@ flexibility to define a bespoke appender
 	) }
 />
 
-// Will only display `ButtonBlockAppender` when there are no child blocks present
-<InnerBlocks
-	renderAppender={ () => (
-		<InnerBlocks.HideWhenChildBlocks>
-			<InnerBlocks.ButtonBlockAppender />
-		</InnerBlocks.HideWhenChildBlocks>
-	) }
-/>
-
 // Fully custom
 <InnerBlocks
 	renderAppender={ () => (

packages/block-editor/src/components/inner-blocks/index.js

@@ -19,7 +19,6 @@ import { compose } from '@wordpress/compose';
  */
 import ButtonBlockAppender from './button-block-appender';
 import DefaultBlockAppender from './default-block-appender';
-import HideWhenChildBlocks from './hide-when-child-blocks';
 
 /**
  * Internal dependencies
@@ -173,7 +172,6 @@ InnerBlocks = compose( [
 // Expose default appender placeholders as components.
 InnerBlocks.DefaultBlockAppender = DefaultBlockAppender;
 InnerBlocks.ButtonBlockAppender = ButtonBlockAppender;
-InnerBlocks.HideWhenChildBlocks = HideWhenChildBlocks;
 
 InnerBlocks.Content = withBlockContentContext(
 	( { BlockContent } ) => <BlockContent />