refactor(treewide): formatting and ruff fixes, + manually enabled F401

Signed-off-by: Akhil Narang <me@akhilnarang.dev>

erpnext/setup/demo.py

@@ -150,7 +150,6 @@ def convert_order_to_invoices():
 				document, filters={"docstatus": 1}, fields=["name", "transaction_date"], limit=6
 			)
 		):
-
 			if document == "Purchase Order":
 				invoice = make_purchase_invoice(order.name)
 			elif document == "Sales Order":
@@ -217,7 +216,7 @@ def delete_company(company):
 
 def read_data_file_using_hooks(doctype):
 	path = os.path.join(os.path.dirname(__file__), "demo_data")
-	with open(os.path.join(path, doctype + ".json"), "r") as f:
+	with open(os.path.join(path, doctype + ".json")) as f:
 		data = f.read()
 
 	return data