mac80211: clean up some comments

Some comments refer to 80211.o or similar; also remove
a comment about implementing fragments better, we really
have better things to do.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 582396a..33530b2 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -501,8 +501,8 @@
 	/* Drop disallowed frame classes based on STA auth/assoc state;
 	 * IEEE 802.11, Chap 5.5.
 	 *
-	 * 80211.o does filtering only based on association state, i.e., it
-	 * drops Class 3 frames from not associated stations. hostapd sends
+	 * mac80211 filters only based on association state, i.e. it drops
+	 * Class 3 frames from not associated stations. hostapd sends
 	 * deauth/disassoc frames when needed. In addition, hostapd is
 	 * responsible for filtering on both auth and assoc states.
 	 */