Bug 35453: Fix wrong 'Laserdisc)' string on 007 builder (MARC21)

Bug 35453: Fix wrong 'Laserdisc)' string on 007 builder (MARC21)

Steps to reproduce:
1. On cataloguing, open the 007 builder.
2. Choose material type 'Video recording'
3. On 04 choose g - Laserdisc
4. Click save
=> SUCCESS: 'g' correctly shows on the 007
5. Edit the 007 again
=> FAIL: on 04, 'g - Laserdisc)' is displayed
6. Apply this patch
7. Repeat 4 and 5
=> SUCCESS: no trailing ')'
8. Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>