QT: Removed unused function.

xtt/lib/cow/qt/cow_wow_qt.cqt

@@ -309,12 +309,6 @@ void CoWowQt::PopList(void* data)
   pop(ctx);
 }
 
-void CoWowQt::DeleteList(void* data)
-{
-  CoWowListWidgetQt* ctx = (CoWowListWidgetQt*)data;
-  ctx->close();
-}
-
 void CoWowWarrantQt::reject()
 {
   QDialog::reject();

xtt/lib/cow/qt/cow_wow_qt.h

@@ -196,7 +196,6 @@ public:
       void(action_cb)(void*, char*, int), void(cancel_cb)(void*), void* ctx,
       int show_apply_button = 0);
   void PopList(void* ctx);
-  void DeleteList(void* ctx);
   void CreateFileSelDia(const char* title, void* parent_ctx,
       void (*file_selected_cb)(void*, char*, wow_eFileSelType),
       wow_eFileSelType file_type);