This patch removes the unnecessary second definition of the JS function PopupMARCFieldDoc from addbiblio.tt.
To test:
1. Apply the patch
2. Check that addbiblio.tt contains only one function definition for PopupMARCFieldDoc
3. Navigate to "Cataloging" -> "Add MARC record"
4. Check that after clicking on the question mark symbol next to any MARC field, the loc description of that MARC field is opened in a new tab
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com> Signed-off-by: Nick Clemens <nick@bywatersolutions.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>