Delete a windows service.

Remove-Service.ps1

function Remove-Service {
  [cmdletbinding()]
  Param(
    [Parameter(Mandatory=$True,ValueFromPipeline=$True)] [object] $service
  )
  BEGIN { }
  PROCESS {
    $serviceName = $service.Name
    if (-not $serviceName) {
        throw "Not a valid service!"
    }
    Stop-Service $service
    Start-Sleep -Seconds 5
    $nameFilter = "Name='$($serviceName)'"
    $wmiservice = Get-WmiObject -Class Win32_Service -Filter "$nameFilter" -ComputerName $service.MachineName
    if ($wmiservice) {
        $wmiservice.delete()
        Start-Sleep -Seconds 2
        ##This next part (usually) solves the "this service has been marked for deletion" issue in windows.
        $service = Get-Service $serviceName -ErrorAction SilentlyContinue
        if ($service) {
          Stop-Service $service
          Start-Sleep -Seconds 2
          $service = Get-Service $serviceName
          if ($service) {
            throw "Unable to remove the service."
          }
        }
    }
    else {
        Write-Warning "Wmi Service not found. Verify the service currently exists."
    }
  }
}