Bug 14965: Remove C4::Dates from 'lists' in folder reports

Bug 14965: Remove C4::Dates from 'lists' in folder reports

Remove C4::Dates from:

- reports/bor_issues_top.pl
- reports/borrowers_out.pl
- reports/cat_issues_top.pl
- reports/itemslost.pl

To test:

- Go to Home > Reports
- Verify that following reports behave as before:
  - 'Patrons with the most checkouts (reports/bor_issues_top.pl)
  - 'Most circulated items' (reports/cat_issues_top.pl)
  - 'Patrons who haven't checked out (reports/borrowers_out.pl)
  - 'Items lost'

Amended to fix issue with reports/borrowers_out.pl / see comment #3
Amended to fix issue with reports/bor_issues_top.pl / see comment #7
http://bugs.koha-community.org/show_bug.cgi?id=14965

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
  Code OK. The 4 reports works for me as before (same results).

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>