Java 7 diamonds
Remove unused method.

Leftover from :

WICKET-4617 untangled ResourceFinder and ResourceStreamLocator, dropped IResourcePath, added ClassPathResourceFinder, removed classloading from ResourceStreamLocator
Squashed commit of the following:  commit 12ee50952a0e75c6cf22a607a902894611dc16ef Author: Carl-Eric Menzel <cmenzel@wicketbuch.de>
Remove unused method