Remove sampling reference from FINISHED.mdx (#23)

Author: NMinhNguyen

exercises/FINISHED.mdx

@@ -44,8 +44,8 @@ Hooray! You're all done! 👏👏
 
 **In summary:**
 
-You've built a robust MCP server that supports tools, resources, prompts, and
-sampling. You've learned to design for extensibility, safety, and real-world use
+You've built a robust MCP server that supports tools, resources, and prompts.
+You've learned to design for extensibility, safety, and real-world use
 cases—empowering both users and language models to interact with your server in
 powerful, structured ways.