[BUG] AksEdgeAzureSetup.ps1 should remove --include-classic-administrators

[zpertee]

In tools/scripts/AksEdgeAzureSetup/AksEdgeAzureSetup.ps1 line 204 reads $adminroles = (az role assignment list --include-classic-administrators) | ConvertFrom-Json. Azure CLI dropped --include-classic-administrators parameter in version 2.73.0 (May 20, 2025). See: Azure/azure-cli#27199. This results in an error being thrown if a more recent version of Azure CLI has been installed.