Bug 11007: Drop column aqorders.cancelledby

Bug 11007: Drop column aqorders.cancelledby

It seems that this column has never been used.

Test plan:
1/ Execute the updatedatabase entry.
2/ git grep cancelledby should not return occurrence in the code (except
in Koha/Schema/*
3/ prove t/db_dependent/Acquisition.t should return green.

Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
I couldn't find any trace of this column being used.
Passes tests and QA script, updates all necessary files.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>