replaced C::Local::Worklist::Preregistratation::delete() call to L::Model::get_unregistered_request() with call to M::Base::get_object_by_param(), reverted get_unregistered_request() to previous version}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1269 4177bd82-f056-0410-812d-caef170e3fa0
