chore: Clean up imports (#27302)

* chore: Added isort to pre-commit config

* chore: Sort imports with isort

* chore: Clean up imports with pycln

* chore: Sort imports with isort

* chore: Fix import issues

* chore: Clean up sider issues

* chore: Remove import errors from flake8 ignore list

* chore: Clean up lint issues
diff --git a/erpnext/manufacturing/dashboard_fixtures.py b/erpnext/manufacturing/dashboard_fixtures.py
index 7ba43d6..1bc12ff 100644
--- a/erpnext/manufacturing/dashboard_fixtures.py
+++ b/erpnext/manufacturing/dashboard_fixtures.py
@@ -1,9 +1,14 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
 # License: GNU General Public License v3. See license.txt
 
-import frappe, erpnext, json
+import json
+
+import frappe
 from frappe import _
-from frappe.utils import nowdate, get_first_day, get_last_day, add_months
+from frappe.utils import add_months, nowdate
+
+import erpnext
+
 
 def get_data():
 	return frappe._dict({