Merge pull request #302508 from dlepow/sk

[APIM] Remove links to retired semantic kernel article

Author: denrea

articles/api-management/TOC.yml

@@ -254,8 +254,6 @@
     href: azure-openai-enable-semantic-caching.md
   - name: Authenticate and authorize to Azure OpenAI
     href: api-management-authenticate-authorize-azure-openai.md
-  - name: Protect Azure OpenAI keys
-    href: /semantic-kernel/deploy/use-ai-apis-with-api-management?toc=%2Fazure%2Fapi-management%2Ftoc.json&bc=/azure/api-management/breadcrumb/toc.json
 - name: Manage APIs with policies
   items:
   - name: API Management policies overview

articles/api-management/api-management-authenticate-authorize-azure-openai.md

@@ -165,4 +165,3 @@ Following are high level steps to restrict API access to users or apps that are
 
 * Learn more about [Microsoft Entra ID and OAuth2.0](../active-directory/develop/authentication-vs-authorization.md).  
 * [Authenticate requests to Azure AI services](/azure/ai-services/authentication)
-* [Protect Azure OpenAI keys with API Management](/semantic-kernel/deploy/use-ai-apis-with-api-management?toc=%2Fazure%2Fapi-management%2Ftoc.json&bc=/azure/api-management/breadcrumb/toc.json)