Revert "fix: purchase receipt test"

This reverts commit 5ce395a60a0ebace32382343110e0ceccac4880e.
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index e941c52..d2c1bff 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -519,7 +519,6 @@
 							debit=0.0,
 							credit=discrepancy_caused_by_exchange_rate_difference,
 							remarks=remarks,
-							against_type="Supplier",
 							against_account=self.supplier,
 							debit_in_account_currency=-1 * discrepancy_caused_by_exchange_rate_difference,
 							account_currency=account_currency,
@@ -533,7 +532,6 @@
 							debit=discrepancy_caused_by_exchange_rate_difference,
 							credit=0.0,
 							remarks=remarks,
-							against_type="Supplier",
 							against_account=self.supplier,
 							debit_in_account_currency=-1 * discrepancy_caused_by_exchange_rate_difference,
 							account_currency=account_currency,