ath9k: remove unnecessary IEEE80211_TX_CTL_NO_ACK checks
ath9k: remove unnecessary IEEE80211_TX_CTL_NO_ACK checks

We check for this condition early on in our mac80211 get_rate()
callback ath_get_rate(), so remove this check later down the path.

Cc: Derek Smithies <e1c79a582b6629e6b39e9679f4bb964d25db4aa8@indranet.co.nz>
Cc: Chittajit Mitra <f78639665717f5e29c2c34c9760054637a4f8ffa@Atheros.com>
Signed-off-by: Luis R. Rodriguez <79e6b8107a8aa3944e09fad43634662ac3b91a0b@atheros.com>
Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas