g10/armor: remove unused unarmor_pump code
* g10/armor.c (unarmor_state_e, unarmor_pump_s, unarmor_pump_new) (unarmor_pump_release, unarmor_pump): Remove. * g10/filter.h (UnarmorPump, unarmor_pump_new, unarmor_pump_release) (unarmor_pump): Remove.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>