wifi: mac80211: remove outdated comments

These comments are no longer correct, it's a wiphy work now
so it will go away immediately when canceled.
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240506211422.68bc10efbd8a.If80f43f4c8b9db1f5266f70d93a805f8c7463fe2@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/cfg.c

@@ -3482,10 +3482,6 @@ static void ieee80211_end_cac(struct wiphy *wiphy,
 	lockdep_assert_wiphy(local->hw.wiphy);
 
 	list_for_each_entry(sdata, &local->interfaces, list) {
-		/* it might be waiting for the local->mtx, but then
-		 * by the time it gets it, sdata->wdev.cac_started
-		 * will no longer be true
-		 */
 		wiphy_delayed_work_cancel(wiphy,
 					  &sdata->deflink.dfs_cac_timer_work);
 

net/mac80211/util.c

@@ -3456,10 +3456,6 @@ void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
 	lockdep_assert_wiphy(local->hw.wiphy);
 
 	list_for_each_entry(sdata, &local->interfaces, list) {
-		/* it might be waiting for the local->mtx, but then
-		 * by the time it gets it, sdata->wdev.cac_started
-		 * will no longer be true
-		 */
 		wiphy_delayed_work_cancel(local->hw.wiphy,
 					  &sdata->deflink.dfs_cac_timer_work);