perf(tests): Remove unnecessary tearDown code
diff --git a/erpnext/stock/doctype/stock_settings/test_stock_settings.py b/erpnext/stock/doctype/stock_settings/test_stock_settings.py
index 1e83ec2..42a78f7 100644
--- a/erpnext/stock/doctype/stock_settings/test_stock_settings.py
+++ b/erpnext/stock/doctype/stock_settings/test_stock_settings.py
@@ -8,16 +8,7 @@
 
 class TestStockSettings(unittest.TestCase):
 	def setUp(self):
-		settings = frappe.get_single('Stock Settings')
-		settings.clean_description_html = 0
-		settings.save()
-
-		frappe.delete_doc('Item', 'Item for description test')
-
-	def tearDown(self):
-		settings = frappe.get_single('Stock Settings')
-		settings.clean_description_html = 1
-		settings.save()
+		frappe.db.set_value("Stock Settings", None, "clean_description_html", 0)
 
 	def test_settings(self):
 		item = frappe.get_doc(dict(