fix: removed unused code

erpnext/patches/v12_0/update_sales_invoice_remarks.py

@@ -1,5 +1,4 @@
 from __future__ import unicode_literals
-from mmap import PAGESIZE
 import frappe
 
 from frappe import _
@@ -30,6 +29,4 @@ def execute():
         )
         
         for entry in gl_entry_list:
-            frappe.db.set_value('GL Entry', entry.name, 'remarks', remarks)
-
-    
+            frappe.db.set_value('GL Entry', entry.name, 'remarks', remarks)