Removed comma

This caused an error in the dojo build tool, pretty minor:

0 error(s), 1 warning(s)
C:/Documents and Settings/Administrator/Desktop/build/release/cbtree/stores/BreadCrumb.js:246: ERROR - Parse error. Internet Explorer has a non-standard intepretation of trailing commas. Arrays will have the wrong length and objects will not parse at all.
	});