diff --git a/zipline/utils/calendars/calendar_utils.py b/zipline/utils/calendars/calendar_utils.py
index bbaf64db..dca52f4e 100644
--- a/zipline/utils/calendars/calendar_utils.py
+++ b/zipline/utils/calendars/calendar_utils.py
@@ -10,8 +10,6 @@ from zipline.utils.calendars.exchange_calendar_bmf import BMFExchangeCalendar
 from zipline.utils.calendars.exchange_calendar_lse import LSEExchangeCalendar
 from zipline.utils.calendars.exchange_calendar_tsx import TSXExchangeCalendar
 
-_static_calendars = {}
-
 
 NYSE_CALENDAR_EXCHANGE_NAMES = frozenset([
     "NYSE",