Delete attached Event reciver from list

Add-PSSnapin Microsoft.SharePoint.PowerShell –erroraction SilentlyContinue

$web = Get-SPWeb -Identity http://siteURL/
$list = $web.GetList($web.Url + "/Lists/" + "ListName")

$type = "ItemDeleting"

$numberOfEventReceivers = $list.EventReceivers.Count

if ($numberOfEventReceivers -gt 0)
{
   for( $index = $numberOfEventReceivers -1; $index -gt -1; $index–-)
   {
      $receiver = $list.EventReceivers[$index] ;
      $name = $receiver.Name
      $typ = $receiver.Type ;

      if($name -eq "EventReceiver1ItemDeleting")
      {
         $receiver.Delete()
         Write-Host "Event receiver " $name " is deleted"
      }
   }
}
else
{
   Write-Host " There is no EventReceivers of type " $type " registered for this list "
}

$web.Dispose()