Remove unused variable and extra undef.
Remove unused variable and extra undef.

eworm-de/yubico-pam,eworm-de/yubico-pam,Yubico/yubico-pam,madrat-/yubico-pam,madrat-/yubico-pam,eworm-de/yubico-pam,Yubico/yubico-pam,Yubico/yubico-pam,madrat-/yubico-pam