TemplateToaster version 6 provide option to apply/modify/remove slideshow image background link, to remove slideshow background image link please follow the steps provided below.
Go to TemplateToaster 6 -> Slideshow -> Background -> Images -> More images -> Link -> Provide your custom link or Remove the link -> Save.
TemplateToaster version 7 provide option to enable/disable background image link for all backgrounds i.e Container,Header, Menu and Slideshow.
To remove default TemplateToaster link from background image please follow the steps provided below.
Go to TemplateToaster version 7 -> Container/Header/Menu/Slideshow -> Background -> Images -> More images -> Link -> Provide your custom link or Remove the link -> Save.