Remove hover effect when cursor goes over images in slideshow

Site URL: http://yummytheshow.com

On any pages with a slideshow gallery - there's a hover effect that lightens the image when the mouse hovers over it. Does anyone know the CSS to remove this altogether?

.tweak-index-gallery-hover-style-fade .Index-gallery-item-image img {
    opacity: .9 !important;
}

You could also make the opacity 1, but .9 is what it was when the mouse was not over the image.