rt2x00: Remove HWMODE_{A,B,G}

rt2500usb initialized the SIFS and EIFS without using the
values coming from rt2x000lib. After this is fixed HWMODE_{A,B,G}
is now unused and can be removed in favour of the ieee80211_band
enumeration which could still be usefull later.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.h b/drivers/net/wireless/rt2x00/rt2500usb.h
index 23ba0c1..647cd2d 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.h
+++ b/drivers/net/wireless/rt2x00/rt2500usb.h
@@ -135,7 +135,7 @@
  * Misc MAC_CSR registers.
  * MAC_CSR9: Timer control.
  * MAC_CSR10: Slot time.
- * MAC_CSR11: IFS.
+ * MAC_CSR11: SIFS.
  * MAC_CSR12: EIFS.
  * MAC_CSR13: Power mode0.
  * MAC_CSR14: Power mode1.