Bug 33556: Path parameters are handled explicitly in the controllers

Bug 33556: Path parameters are handled explicitly in the controllers

In the case of $c->objects->search_rs, the variable is just not used.
In the case of /acq/orders, it's a leftover from when we removed in the
helper. Check there are tests with path params everywhere (including
orders) and it has no effect.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>