mac80211: remove unused ASSOC_AP flag

WLAN_STA_ASSOC_AP indicates that the station entry
is for an AP we're associated to but isn't used so
remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc net/mac80211/debugfs_sta.c
Simple merge

diff --cc net/mac80211/mlme.c
Simple merge

diff --cc net/mac80211/sta_info.h
Simple merge