Corrected broken url (#3433)

Author: mikefrobbins

bread/toc.yml

@@ -13,9 +13,6 @@ items:
           - name: Azure PowerShell
             tocHref: /powershell/module/
             topicHref: /powershell/module/
-          - name: Azure PowerShell
-            tocHref: /powershell/azure/deploymentmanager
-            topicHref: /powershell/azure/deploymentmanager/overview
           - name: Az Tools
             tocHref: /powershell/module/aztools
             topicHref: /powershell/azure/overview?view=aztools&preserve-view=true