Remove "post author" text from comment author name

Didn’t manage to bring up your site, so guessing you’ve moved on. But in case anyone else is looking for this, the code is in themes>clean-retina>library>functions>functions.php (there is another different functions.php in another folder). If you search for “post author” it doesn’t take much coding knowledge to change it to a space. Just be sure to back the original up first ??

FWIW, I succeeded in getting css changes to work out of a child theme, but for this, it still executed the parent version (my coding knowledge is light) and I had to change it there (knowing I will need to re-change it if upgraded).