Bug 29318: Remove permission check from overdrive search page

Bug 29318: Remove permission check from overdrive search page

This removes the 'edit_borrowers' permission from OverDrive search

To test:
1 - Enable OverDrive via koha system preferences
2 - Sign in to opac with a user with no permissions
3 - Perform a search that will return OD results, 'love' works
4 - Click thje "Found XX results in the library's OverDrive collection"
5 - Note you are logged out of Koha
6 - Apply patch
7 - Repeat
8 - Success

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>