Bug 37109: Don't initialise claims fields when duplicating acquisitions orders

Bug 37109: Don't initialise claims fields when duplicating acquisitions orders

These fields don't exist in the aqorders table and don't need to be
set/passed on.

* claims_count (dropped in Bug 24161)
* claimed_date (dropped in Bug 24161)
* placed_on (no evidence of this field existing in aqorders)
* received_on (no evidence of this field existing in aqorders)

To test:

1. Go to Acquisitions
2. Create a vendor if you don't already have one
3. Create a basket if you don't already have one
4. Add an order to the basket and Save
5. Add another order to the basket, choose "From existing orders
   (copy)"
6. Continue through the process and confirm you're able to duplicate the
   order as normal
7. Confirm tests still pass t/db_dependent/Koha/Acquisition/Order.t

Sponsored-by: Catalyst IT
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>