97281a746606 removed this option that was available since 3255a31c30a2.
Closes#12910
(grafted from b835e9473ea18bfcc8aa10b58bca7edb544e0a88)
--HG--
branch : 7.0
The fiscal years are created centered on the passed date such that if the
current day change during the execution, the fiscal year is still usable.
Also fiscal year can be created for a range of dates such that it is guarantee
that the dates are in the fiscal year.
And finally remove datetime and dateutil import when they are not used.
Closes#9977
Cédric Krier