sssd_client: Do not use removed memory cache
Resolves:
https://fedorahosted.org/sssd/ticket/2726
Reviewed-by: Michal Židek <mzidek@redhat.com>
(cherry picked from commit c269ca2669706bddb25c5938b50277b0c0a94ea4)
(cherry picked from commit e360fa6e91ee3500435e85b9c51c4932d2b99f33)