Droppable: Removed empty tickets test file.

Author: scottgonzalez

tests/unit/droppable/droppable.html

@@ -21,7 +21,6 @@
 	<script type="text/javascript" src="droppable_events.js"></script>
 	<script type="text/javascript" src="droppable_methods.js"></script>
 	<script type="text/javascript" src="droppable_options.js"></script>
-	<script type="text/javascript" src="droppable_tickets.js"></script>
 
 	<script type="text/javascript">
 	// disable this stale testsuite for testswarm only