Removed old Data Matrix standards

Removed Data Matrix ECC 000 to 140 because (a) they don't work properly and (b) nobody uses them anyway!
Also removed some ghosts of Codablock-F - there are some more to find.

frontend_qt4/mainwindow.h

@@ -113,7 +113,6 @@ public slots:
 	void on_bgcolor_clicked();
 	void composite_enable();
 	void composite_ean_check();
-	void datamatrix_options();
 	void maxi_primary();
 	void change_print_scale();