@DaveOzric. Thanks for purchasing my plugin. Actually, there is no need to edit any code to do that. Just go to the Plugin Manager and change the value of “Show Empty Message” to No. You can either do that, or change it in the instance:
{easyfolderlistingpro showempty=0}
I have a full list of the parameters and their function here: http://michaelgilkes.info/joomla-plugin-easy-folder-listing-pro/
The Easy Folder Listing Pro is very flexible and configurable so please have a look at the available features before tinkering with the code. It will save you a lot of time.