I have tried and tried to remove the heading "Category Archives" from my website but have had no luck. Here is my site http://www.technowolf.com/category/bing/
Also, I have already tried this with no luck: Please find attached child theme. Unzip it, edit template-tags.php, find Category Archives and change as required, do an in page search. Then re-zip the folder head to Appearance > Themes > Add New and upload the ZIP there.