Bug 38197: Remove old version of Bootstrap JS left behind during upgrade

Bug 38197: Remove old version of Bootstrap JS left behind during upgrade

This patch removes an old version of Bootstrap JS which should have been
removed by Bug 35402. The correct Bootstrap JS file is at
koha-tmpl/opac-tmpl/lib/bootstrap/js/bootstrap.bundle.min.js

This patch should have no effect on any OPAC functionality.
Bootstrap-related features should still work: Dropdown menus, modals,
etc.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>