Hi sasii,
1. This might be possible, we can try it specially for you, but this will require changing in your theme files, which I don’t recommend because with future updates you will lose that change.
2. Add these CSS lines in your theme options > Custom CSS, and this should do it:
.portfolioImage {
display: none;
}
.singlePortfolio .span4 {
width: 100%;
}
Waiting for your reply,
Thanks