Removing sample

Author: niels9001

components/MarkdownTextBlock/samples/MarkdownTextBlock.md

@@ -38,10 +38,4 @@ Try typing markdown and see it rendered in real-time:
 ## Custom theme sample
 Try different styling options for all markdown elements with a custom theme:
 
-> [!Sample MarkdownTextBlockCustomThemeSample]
-
-## Image Provider Constraints
-Test the IImageProvider constraint behavior to verify small images aren't incorrectly enlarged:
-
-> [!Sample MarkdownTextBlockImageProviderSample]
-
+> [!Sample MarkdownTextBlockCustomThemeSample]