WMCO remove managedIdentity from Azure machine set YAML example

Author: Michael Burke

modules/windows-machineset-azure.adoc

@@ -48,7 +48,6 @@ spec:
             version: latest
           kind: AzureMachineProviderSpec
           location: <location> <6>
-          managedIdentity: <infrastructure_id>-identity <1>
           networkResourceGroup: <infrastructure_id>-rg <1>
           osDisk:
             diskSizeGB: 128