[FIX] hr_holidays: correct fields declaration of hr.leave.report.cale…

…ndar

The field `duration` was still declared but has actually been removed
from the SQL view with d2238de.

Avoid an error when trying to read this field.

Error spotted by odoo/upgrade#3511

closes odoo#91250

X-original-commit: adfc1ac
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>
Signed-off-by: Christophe Simonis <chs@odoo.com>

addons/hr_holidays/report/hr_leave_report_calendar.py

@@ -16,7 +16,7 @@ class LeaveReportCalendar(models.Model):
     start_datetime = fields.Datetime(string='From', readonly=True)
     stop_datetime = fields.Datetime(string='To', readonly=True)
     tz = fields.Selection(_tz_get, string="Timezone", readonly=True)
-    duration = fields.Float(string='Duration', readonly=True)
+    duration = fields.Float(string='Duration', readonly=True, store=False)
     employee_id = fields.Many2one('hr.employee', readonly=True)
     department_id = fields.Many2one('hr.department', readonly=True)
     job_id = fields.Many2one('hr.job', readonly=True)