Hello,
This type of bullets displays the slide title on hover.
To change it you need to edit the slide title https://gyazo.com/eddc31af89250a126b1ba2a6792a2cd7
If you don’t want to show the title on hover you need either choose the other type of bullets that does not include the title or edit the exiting navigation type or create your custom bullets type that won’t include the title on hover https://www.sliderrevolution.com/documentation/navigation-editor/
Regards