Update toc.yml

Author: ikhapova

articles/advisor/toc.yml

@@ -46,8 +46,6 @@
     href: advisor-cost-recommendations.md
   - name: Improve security
     href: advisor-security-recommendations.md
-  - name: Improve reliability
-    href: advisor-how-to-improve-reliability-of-your-applications.md
   - name: Improve the performance of highly used VMs
     href: advisor-how-to-performance-resize-high-usage-vm-recommendations.md
   - name: Use tags to filter recommendations and score