I'd like to remove the 2nd and 3rd slides .. is this possible ?
Also while I am doing this how to I license my Essential Grid
Sure, you can remove the slides by hovering the slide and on the right side of the slide a minus symbol will appear to remove the entire image slide (please see attached screenshot).
The Essential Grid plugin doesn't come with a license because it comes with the theme. Updates for this plugin will be shipped within theme updated. You can click the small X icon in the top right of the notice to remove the notice.
Attached files: remove-slide.jpg