How to remove watermark in amazing slider in wordpress?

When I saw it, I said wow, it is awesome, but after using it, there was a watermark on the images,
which make everything looks bad. so i told my self I had to share this with the world. it cost $249

 inside sliderengine folder open amazingslider.js file with any editor and search for this 


And then search for


Line no. 300 there will a variable wpocss and infront of it there will be written 

display:block !important;

Change it to:-

display:none !important;