Remove links to channel 9

Author: MikeRayMSFT

docs/sql-server/educational-sql-resources.yml

@@ -29,9 +29,6 @@ landingContent:
         url: https://www.linkedin.com/learning/topics/sql-server
       - text: Pluralsight
         url: https://www.pluralsight.com/browse/data-professional/sql-server
-      - text: Channel 9
-        url: https://channel9.msdn.com/Tags/sql+server
-
 
   - title: SQL Server
     linkLists:

docs/toc.yml

@@ -10379,8 +10379,6 @@ items:
       href: sql-server/educational-sql-resources.yml
     - name: Microsoft Learn >>
       href: /learn/
-    - name: SQL on Channel 9 >>
-      href: https://channel9.msdn.com/Search
   - name: Help
     items:
     - name: Get help