Hide 'sold out' banner on product summary

Hi Everyone,

I've just launched my fine art website in time for my first exhibition but I'm having trouble removing just one ugly feature on my homepage (carrieretallack.com) 2nd section down, on the product summary block, there's a banner appearing over my images that currently has a customised version of the 'Sold out' text which I've changed to "Prices as displayed. All sales currently through Brunswick Street Gallery" as I'm unable to make sales directly through my site for the period of my exhibition.

Anyone have any advice/custom code I could use just to hide it in this instance please? It's covering all my images!

 @tuanphan  it looks like you may have provided a similar solution for just the product page (which I used and worked thanks!) but it's the summary block now that it still appears on I want to remove it from. 

Thanks!
Carrie

Hi @tuanphan  you are seriously the best! Thanks so much!!! : )