Remove obsolete article

Author: David Curwin

articles/backup/backup-azure-central-reporting-updates.md

@@ -174,8 +174,6 @@
       href: backup-azure-reports-data-model.md
     - name: Log Analytics data model for Azure Backup
       href: backup-azure-log-analytics-data-model.md
-    - name: Updating Azure Backup Central Reporting Content Pack
-      href: backup-azure-central-reporting-updates.md
   - name: Data Protection Manager
     items:
     - name: Prepare DPM workloads in the Azure portal