Fix-up for Ib98499040

Specify { path: '/' } so the cookie is actually removed.

Change-Id: Ia2902a2a4f01b8b5be635afd9d58cc5589623210

resources/js/ext.uls.init.js

@@ -96,10 +96,11 @@
 	mw.uls.getPreviousLanguages = function () {
 		var previousLanguages = $.cookie( mw.uls.previousLanguagesStorageKey );
 
+		$.removeCookie( mw.uls.previousLanguagesStorageKey, { path: '/' } );
+
 		if ( $.isArray( previousLanguages ) ) {
 			// Migrate data from cookie to localStorage.
 			mw.uls.setPreviousLanguages( previousLanguages );
-			$.removeCookie( mw.uls.previousLanguagesStorageKey );
 		} else {
 			previousLanguages = [];
 		}