At line number 177 of framework/shortcodes/slider-shortcodes.php file, you will find the Lorem Ipsum string that you can just delete. At present, since we specify the image URLs manually in the slider shortcode, there is no support for image titles. I can think of some way to achieve this but not sure if it will really help the users since they may not be able to see it. Probably deleting the same is best way to go.
I have modified the theme to clear out this string and the change will be part of next update of the theme.