fix toc

Author: anaharris-ms

articles/reliability/TOC.yml

@@ -2,29 +2,6 @@
   href: index.yml
 - name: Overview
   href: overview.md
-- name: Reliability fundamentals
-  items:
-  - name: Business continuity, high availability, and disaster recovery
-    href: concept-business-continuity-high-availability-disaster-recovery.md
-  - name: Redundancy, replication, and backup
-    href: concept-redundancy-replication-backup.md
-  - name: Failover and failback
-    href: concept-failover-failback.md
-  - name: Shared responsibility for reliability
-    href: concept-shared-responsibility.md
-- name: Azure regions
-  items:
-  - name: What are Azure regions?
-    href: regions-overview.md
-  - name: Paired and nonpaired regions
-    href: regions-paired.md
-  - name: Multi-region solutions in nonpaired regions
-    href: regions-multi-region-nonpaired.md
-  - name: Nonregional Azure services
-    href: regions-nonregional-services.md
-  - name: Azure regions list 
-    href: regions-list.md
-- name: Azure availability zones
   items:
   - name: What are Azure availability zones?
     href: availability-zones-overview.md