Bug 17578: GetMemberDetails - Remove is_expired

Bug 17578: GetMemberDetails - Remove is_expired

The is_expired value is used in 2 places, let's use
Koha::Patron->is_expired instead.

Test plan:
Depending on the different value of BlockExpiredPatronOpacActions for
the patron category, a patron must be blocked if he has expired.
Confirm that behavior from opac-renew and opac-reserve scripts

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>