Bug 33088: Remove background-job-progressbar.js in batch_record_modification.tt

Bug 33088: Remove background-job-progressbar.js in batch_record_modification.tt

It must be removed, we don't need it since bug 22417

Test plan :
Play with batch record modification and check there is no JS error

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 668252503d3893391d0399537fd6f787cce507c4)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>