removed product that didn't exist

Author: Stephanie-Rosenzweig

learn-pr/paths/develop-ai-agents-on-azure/index.yml

@@ -22,7 +22,6 @@ roles:
 products:
   - foundry-tools
   - microsoft-foundry
-  - azure-ai-foundry-agent-service
   - azure-ai-foundry-sdk
 subjects:
   - artificial-intelligence