(AzureCXP) fixes MicrosoftDocs/azure-docs#340806

Removed line number 142.

As `$dt = $(Get-Date).ToString("M-d-yyyy")` variable is not used and not adding value in given Powershell script.

Author: pratikjadhav13

articles/backup/backup-client-automation.md

@@ -139,7 +139,7 @@ $CredsFilename = Get-AzRecoveryServicesVaultSettingsFile -Backup -Vault $Vault1
 In the latest Az module of PowerShell, because of underlying platform limitations, downloading the vault credentials requires a self-signed certificate. The following example shows how to provide a self-signed certificate and download the vault credentials.
 
 ```powershell
-$dt = $(Get-Date).ToString("M-d-yyyy")
+
 $cert = New-SelfSignedCertificate -CertStoreLocation Cert:\CurrentUser\My -FriendlyName 'test-vaultcredentials' -subject "Windows Azure Tools" -KeyExportPolicy Exportable -NotAfter $(Get-Date).AddHours(48) -NotBefore $(Get-Date).AddHours(-24) -KeyProtection None -KeyUsage None -TextExtension @("2.5.29.37={text}1.3.6.1.5.5.7.3.2") -Provider "Microsoft Enhanced Cryptographic Provider v1.0"
 $certficate = [convert]::ToBase64String($cert.Export([System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx))
 $CredsFilename = Get-AzRecoveryServicesVaultSettingsFile -Backup -Vault $Vault -Path $CredsPath -Certificate $certficate