Update resources-without-resource-group-limit.md

Removed DevTest Labs reference to labs/virtualMachines - limit *is* 800 instances.

Author: RoseHJM

articles/azure-resource-manager/management/resources-without-resource-group-limit.md

@@ -85,7 +85,6 @@ Some resources have a limit on the number instances per region. This limit is di
 
 ## Microsoft.DevTestLab
 
-* labs/virtualMachines - Limited to 800 instances.
 * schedules
 
 ## Microsoft.EdgeOrder