Bug 14338 - Unable to delete patron images [3.16.x]

Bug 14338 - Unable to delete patron images [3.16.x]

The call to RmPatronImage is still passing cardnumber as its parameter
instead of borrowernumber.

Test Plan:
1) Upload a patron image
2) Ensure the card number is not the same as the borrower number
3) Attempt to delete patron image
   -- Image will remain
4) Apply this patch
5) Attempt to delete patron image
   -- Image will be removed
6) run koha qa test tools

NOTE: Deletion worked in 3.16.x, though the message for
      debugging differed (cardnumber vs. borrowernumber).
      This effectively removes cardnumber from the URL and
      messages for the delete operation.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Mason James <mtj@kohaaloha.com>