Replace 'PageLines-' prefix for DMS Editor media uploads (from editor/editor.actions.php)

functions.php

<?php
//from http://www.pagelinestheme.com/remove-customize-dms-editors-media-uploads-prefix/
//replace 'PageLines-' prefix for DMS Editor media uploads (from editor/editor.actions.php)
add_filter( 'pl_up_image_prefix', 'my_pl_upload_prefix');
function my_pl_upload_prefix(){
	return ''; //example result: 'filename.png'
	//return 'My Keyword - '; //example result: 'My Keyword - filename.jpg'
	//return get_bloginfo('name','raw') . ' - '; //example result: 'Site Name - filename.gif'
}