This reverts commit f39b07fd ("mac80211: HE STA disassoc
due to QOS NULL not sent")

Since iwlwifi specific workaround, which blocks to send NDP,
is removed, we can revert this commit.
Signed-off-by: NPing-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20210623134826.10318-2-pkshih@realtek.comSigned-off-by: NJohannes Berg <johannes.berg@intel.com>