Tracker: FSMoveToTrash(): needless check and possible crash fix

In an earlier commit, I removed a memleak, but it was covering more cases
than intended.  Thanks to Alex Wilson's insight, it seems that simply removing
the check is better (since that check is essentially redone in FSMoveToTrash()).

src/kits/tracker/Tracker.cpp

@@ -600,10 +600,8 @@ TTracker::MoveRefsToTrash(const BMessage *message)
 			srcList->AddItem(new entry_ref(ref));
 	}
 
-	if (srcList->CountItems())
+	// async move to trash
-		// async move to trash
+	FSMoveToTrash(srcList);
-		FSMoveToTrash(srcList);
-	delete srcList;
 }