fix: removed unnecessary imports
diff --git a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
index 1f807b8..dc9f2b2 100644
--- a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
@@ -1,10 +1,6 @@
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
# License: GNU General Public License v3. See license.txt
-
-from cmath import pi
-from turtle import update
-
import frappe
from frappe.tests.utils import FrappeTestCase, change_settings
from frappe.utils import add_days, cint, cstr, flt, today
@@ -17,7 +13,6 @@
from erpnext.stock.doctype.purchase_receipt.purchase_receipt import make_purchase_invoice
from erpnext.stock.doctype.serial_no.serial_no import SerialNoDuplicateError, get_serial_nos
from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
-from erpnext.stock.get_item_details import update_stock
from erpnext.stock.stock_ledger import SerialNoExistsInFutureTransaction