BULK EDP Remove broken link

Removed 1 broken link - couldn't find substitute. See User story: [446435](https://dev.azure.com/msft-skilling/Content/_workitems/edit/446435)

Author: v-thepet

articles/traffic-manager/toc.yml

@@ -155,5 +155,3 @@
       href: https://azure.microsoft.com/updates/?product=traffic-manager
     - name: SLA
       href: https://azure.microsoft.com/support/legal/sla/traffic-manager/
-    - name: Videos
-      href: https://azure.microsoft.com/resources/videos/index/?services=traffic-manager