iwlwifi: api: remove unused RX status bits

These bits are unused and don't actually exist in the firmware
API any longer. Remove them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211017113927.022a9f87fdbd.Iae7b8a0196b6e94f9dc525e92a541a28374b0cac@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>