Bug 28973: Improve Koha::Patron::can_see_patron_infos efficiency

Bug 28973: Improve Koha::Patron::can_see_patron_infos efficiency

The method can_see_patron_infos looks up a row in the branches table by branchcode just to get the branchcode it already has. This seems inefficient.

Test Plan:
1) Apply this patch
2) No changes should be noted

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 616c12a1e4238e0ffea722f669cce404511b046b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>