“Description” label/header repeated

I wanted to have an uncluttered product page and managed to hide the tabs for “Additional Information” and “Reviews” but am left with a tab that is labelled “Description” and just below that a header named “Description”

Is there a way to dispense with the either one or both of these “Descriptions”.

I tried to get rid of the second instance by using the code below in CSS, but it didn’t work.

#tab-description h2:first-child {
display: none;
}

Any assistance would be much appreciated

The page I need help with: [log in to see the link]