Removing Category Title on posts page

I am sure there is a way to do this, but I have been unable to find the answer.
I would like to remove the category titles from a page that shows all posts in a single category:
http://kestrelcomputerservices.uk/category/apple
As you can see in the above that it is showing Category: Apple. I would like to be able to remove that.
I am using the Make theme and have checked in Archive.php, single.php, index.php to name a few that have single_cat_title, but have been unable to find this in any of the php files I have checked.
If anyone has any idea where I am going wrong please point me in the right direction.
Many thanks.