Updated function Activation Purchase Code

app\code\Blueskytechco\Themeoption\Block\Adminhtml\Button\Export\Removeactive.php app\code\Blueskytechco\Themeoption\Controller\Adminhtml\Exportoptions\Removepurchasecode.php app\code\Blueskytechco\Themeoption\Helper\Verifypurchasecode.php app\code\Blueskytechco\Themeoption\etc\adminhtml\system.xml