removed add_fetch method
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.js b/erpnext/buying/doctype/purchase_order/purchase_order.js
index 5f2ad1a..e23b0d4 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.js
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.js
@@ -283,5 +283,3 @@
 		erpnext.buying.get_default_bom(frm);
 	}
 });
-
-cur_frm.add_fetch('supplier', 'print_language', 'print_language');