Bug 31201: Prevent Pseudonymization.t to fail

Bug 31201: Prevent Pseudonymization.t to fail

It's failing if selenium/patrons_search.t failed before, they are using
the same code and the selenium tests didn't clean correctly

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit ed83d7744502d767d9806afb8516ec5ecb967fa5)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 7d2086663e64d1768f7a0206851fe857387db36d)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>