diff --git a/controllers/selling_controller.py b/controllers/selling_controller.py
index f1117ed..37674ee 100644
--- a/controllers/selling_controller.py
+++ b/controllers/selling_controller.py
@@ -233,34 +233,4 @@
 			self.doc.order_type = "Sales"
 		elif self.doc.order_type not in valid_types:
 			msgprint(_(self.meta.get_label("order_type")) + " " + 
-				_("must be one of") + ": " + comma_or(valid_types),
-				raise_exception=True)
-				
-	def update_serial_nos(self, cancel=False):
-		from stock.doctype.stock_ledger_entry.stock_ledger_entry import update_serial_nos_after_submit, get_serial_nos
-		update_serial_nos_after_submit(self, self.doc.doctype, self.fname)
-		update_serial_nos_after_submit(self, self.doc.doctype, "packing_details")
-
-		for table_fieldname in (self.fname, "packing_details"):
-			for d in self.doclist.get({"parentfield": table_fieldname}):
-				for serial_no in get_serial_nos(d.serial_no):
-					sr = webnotes.bean("Serial No", serial_no)
-					if cancel:
-						sr.doc.status = "Available"
-						for fieldname in ("warranty_expiry_date", "delivery_document_type", 
-							"delivery_document_no", "delivery_date", "delivery_time", "customer", 
-							"customer_name"):
-							sr.doc.fields[fieldname] = None
-					else:
-						sr.doc.delivery_document_type = self.doc.doctype
-						sr.doc.delivery_document_no = self.doc.name
-						sr.doc.delivery_date = self.doc.posting_date
-						sr.doc.delivery_time = self.doc.posting_time
-						sr.doc.customer = self.doc.customer
-						sr.doc.customer_name	= self.doc.customer_name
-						if sr.doc.warranty_period:
-							sr.doc.warranty_expiry_date = add_days(cstr(self.doc.posting_date), 
-								cint(sr.doc.warranty_period))
-						sr.doc.status =	'Delivered'
-
-					sr.save()
+				_("must be one of") + ": " + comma_or(valid_types), raise_exception=True)
\ No newline at end of file