docs(FileUploader): remove unnecessary story (#5211)

Closes #5208

Author: Lukas742

packages/main/src/webComponents/FileUploader/FileUploader.stories.mdx

@@ -92,17 +92,4 @@ import FileUploaderDomRef from './FileUploaderDomRef.json';
   </Story>
 </Canvas>
 
-### FileUploader with custom elements
-
-<Canvas>
-  <FlexBox alignItems={FlexBoxAlignItems.Center}>
-    <FileUploader hideInput>
-      <Avatar icon={uploadIcon} />
-    </FileUploader>
-    <FileUploader hideInput>
-      <Badge>Upload file</Badge>
-    </FileUploader>
-  </FlexBox>
-</Canvas>
-
 <Footer />