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

Corrected DevTest Lab entry to remove instruction to increase limit.
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cc: @tfitzmac, @sagarlankala

Author: RoseHJM

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

@@ -85,7 +85,7 @@ Some resources have a limit on the number instances per region. This limit is di
 
 ## Microsoft.DevTestLab
 
-* labs/virtualMachines - By default, limited to 800 instances. That limit can be increased by [registering the following features](preview-features.md) - Microsoft.DevTestLab/DisableLabVirtualMachineQuota 
+* labs/virtualMachines - Limited to 800 instances.
 * schedules
 
 ## Microsoft.EdgeOrder