Having major issues with slider

Hello!
I am having quite a bit of trouble with the evolve slider. Basically, I didn’t use the correct dimensions before uploading my first picture, and it started showing up in other slides. I deleted it out, as well as my other slides, but it now shows up just under my header. I even tried deleting the evolve theme and installing it again, and it still shows up. Help, please?

My url is: http://sdsuwomensstudiesandwrc.com

Thanks!!!
Carissa