Yes, a favicon was added as there was none previously.There are 2 icons in the images/ folder which is the same image, just in different sizes.You could simply change these icons to modify this.There are a few lines of code to display the favicons in the include/client/header.inc.php and include/staff/header.inc.php files.It should relatively easy to edit these files and see what needs to be done to comment the lines out.Alternatively, if you are using git you can revert the change to add these files and functionality entirely with a revert.git revert 25f5e449