Fixing bug 79071, 'Remove declaration of gThreadTree from SearchDialog.js' r=hwaara@chello.se sr=sspitzer@netscape.com

mailnews/base/search/resources/content/SearchDialog.js

@@ -33,7 +33,6 @@ var nsMsgSearchScope = Components.interfaces.nsMsgSearchScope;
 
 var gFolderDatasource;
 var gFolderPicker;
-var gThreadTree;
 var gStatusBar = null;
 var gStatusFeedback = new nsMsgStatusFeedback;
 var gNumOfSearchHits = 0;