Bug 14535: Late orders does not show orders with price = 0

Bug 14535: Late orders does not show orders with price = 0

This patch removes the filter of unitpricesupplier <> 0 and
unitpricelib <> 0 from GetLateOrders as used in lateorders.pl.
This allows you to claim late orders without a price entered.

Test plan:
[1] Run t/db_dependent/Acquisition.t
[2] Check if you see an order with no price in lateorders.pl. (If needed,
    remove prices from a few orders.)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>