Bug 14960: Remove C4::Dates from files in misc/cronjobs

Bug 14960: Remove C4::Dates from files in misc/cronjobs

This patch removes C4::Dates from following files:

- misc/cronjobs/batch_anonymise.pl
- misc/cronjobs/cleanup_database.pl
- misc/cronjobs/gather_print_notices.pl
- misc/cronjobs/serialsUpdate.pl
- misc/cronjobs/thirdparty/TalkingTech_itiva_outbound.pl
- misc/cronjobs/overdue_notices.pl
- misc/cronjobs/staticfines.pl

To test:
- Carefully review code changes.
- Verify that the cronjobs behave as before.

Amended to make patch apply and follwoing comments on IRC by putti
http://irc.koha-community.org/koha/2015-11-06#i_1752803
(misc/cronjobs/gather_print_notices.pl is using still C4::Dates, line 84)
6.11.2015 /mv

Signed-off-by: Zeno Tajoli <z.tajoli@cineca.it>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>