Bug 18177: remove aqbooksellers.othersupplier

This patchset removes some columns from the aqbooksellers table that are
not used:
 * booksellerfax
 * booksellerurl
 * bookselleremail
 * othersupplier
 * currency

The first 3 ones are certainly leftover from bug 10402.

Test plan:
For each for these fields you will make sure that they cannot be edited
from the interface.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Koha/Acquisition/Bookseller.pm

@@ -89,7 +89,6 @@ sub to_api_mapping {
         bookselleremail => undef,
         booksellerurl   => undef,
         currency        => undef,
-        othersupplier   => undef,
         listprice       => 'list_currency',
         invoiceprice    => 'invoice_currency',
         gstreg          => 'gst',

t/db_dependent/Bookseller.t

@@ -766,7 +766,7 @@ sub field_filter {
 
     for my $field (
         'bookselleremail', 'booksellerfax',
-        'booksellerurl',   'othersupplier',
+        'booksellerurl',
         'currency',        'invoiceprice',
         'listprice',       'contacts'
       )