All PowerShell versions
While you can easily create new aliases with New-Alias or Set-Alias, there is no cmdlet to delete aliases.
PS> Set-Alias -Name devicemanager -Value devmgmt.msc PS> devicemanager PS>
To delete an alias, you would typically restart your PowerShell. Alternatively, you can delete them using the Alias: drive:
PS> del Alias:\devicemanager PS>