Remove brackets from assert

Author: rhstanton

pandas/tests/tseries/holiday/test_calendar.py

@@ -99,4 +99,4 @@ class testCalendar(AbstractHolidayCalendar):
     workDay = offsets.CustomBusinessDay(calendar=cal)
     Sat_before_Labor_Day_2031 = to_datetime('2031-08-30')
     next_working_day = Sat_before_Labor_Day_2031 + 0 * workDay
-    assert(next_working_day == to_datetime('2031-09-02'))
+    assert next_working_day == to_datetime('2031-09-02')