iwl3945: remove sequence number assignment

Unlike agn, where the sequence numbers must
match with the TFD index, the driver for 3945
devices can use the sequence numbers provided
by mac80211 for QoS frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

diff --cc drivers/net/wireless/iwlwifi/iwl-dev.h
Simple merge

diff --cc drivers/net/wireless/iwlwifi/iwl3945-base.c
Simple merge