fix(account_balance_timeline): remove unused import
diff --git a/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py b/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
index b047cca..f2abb81 100644
--- a/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
+++ b/erpnext/accounts/dashboard_chart_source/account_balance_timeline/account_balance_timeline.py
@@ -6,7 +6,7 @@
from frappe.utils import add_to_date, date_diff, getdate, nowdate, get_last_day
from erpnext.accounts.report.general_ledger.general_ledger import execute
from frappe.core.page.dashboard.dashboard import cache_source, get_from_date_from_timespan
-from frappe.desk.doctype.dashboard_chart.dashboard_chart import get_period_beginning, get_period_ending
+from frappe.desk.doctype.dashboard_chart.dashboard_chart import get_period_ending
from frappe.utils.nestedset import get_descendants_of