Bug 14870: (followup) Remove stray C4::Dates

Bug 14870: (followup) Remove stray C4::Dates

(See comment #23)

This patch removes stray C4::Dates (date_fromat...) from
C4/Items.pm
C4/Log.pm
C4/Serials.pm
serials/acqui-search-result.pl
t/DateUtils.t
t/db_dependent/Items/GetItemsForInventory.t
tools/koha-news.pl

Some of them were inside comments etc.

To test:
- git grep 'C4::Dates' should give no result
- git grep 'format_d' should give no result
  Exception: in one cron job there exists an own sub format_date, and occurences not
             related to C4::Dates
- Search for regressions

http://bugs.koha-community.org/show_bug.cgi?id=14870
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
serials/acqui-search-results.pl looks like it should be revisited,
containing code that might not be needed. Searching a vendor
in serials still works witout a problem.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>