This reverts commit 
c17aa52c5bf571533cc8561292f7316b9216eddc.
It was wrong, IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ
already implies that 160 MHz is supported, as it isn't a bitmap
but rather a value in a 2-bit field.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
                sband->vht_cap.cap =
                        IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
                        IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
-                       IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
                        IEEE80211_VHT_CAP_RXLDPC |
                        IEEE80211_VHT_CAP_SHORT_GI_80 |
                        IEEE80211_VHT_CAP_SHORT_GI_160 |