Revert "fix: set `received_qty` before_validate SCR"

This reverts commit c447dfaa9cbc59ed0e5a269eded3600d5acb0d3a.
diff --git a/erpnext/subcontracting/doctype/subcontracting_receipt/subcontracting_receipt.py b/erpnext/subcontracting/doctype/subcontracting_receipt/subcontracting_receipt.py
index c7f592b..bce5360 100644
--- a/erpnext/subcontracting/doctype/subcontracting_receipt/subcontracting_receipt.py
+++ b/erpnext/subcontracting/doctype/subcontracting_receipt/subcontracting_receipt.py
@@ -58,7 +58,6 @@
 	def before_validate(self):
 		super(SubcontractingReceipt, self).before_validate()
 		self.set_items_bom()
-		self.set_received_qty()
 		self.set_items_cost_center()
 		self.set_items_expense_account()
 
@@ -213,10 +212,6 @@
 						"bom",
 					)
 
-	def set_received_qty(self):
-		for item in self.items:
-			item.received_qty = flt(item.qty) + flt(item.rejected_qty)
-
 	def set_items_cost_center(self):
 		if self.company:
 			cost_center = frappe.get_cached_value("Company", self.company, "cost_center")