public function removeTransformsForAsset(AssetFileModel $asset)
{
$paths = new Imager_ImagePathsModel($asset);
if (strpos($paths->targetPath, craft()->imager->getSetting('imagerSystemPath')) !== false) {
IOHelper::clearFolder($paths->targetPath);
craft()->templateCache->deleteCachesByElementId($asset->id);
if ($paths->isRemote) {
IOHelper::deleteFile($paths->sourcePath . $paths->sourceFilename);
}
}
}