Hotspots Docs
Remove "Hotspots is powered by" text (Pro feature)
To remove the copyright text at the bottom of the component, login into your Joomla backend and go to components->Hotspots. On the Hotspots Dashboard click on the Options button and after that navigate to the Layout tab. Find the "Powered by" option and set it to NO.
This option is enabled only in the PRO version of the component.