staging: vt6656: remove rate_control_algorithm pid

rate control algorithm pid was removed from wireless tree

The device defaults to algorithm 'minstrel_ht'

There has been no problems using this algorithm.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 422fcba..2fbff90 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -993,7 +993,6 @@
 		IEEE80211_HW_SIGNAL_DBM |
 		IEEE80211_HW_TIMING_BEACON_ONLY;
 
-	priv->hw->rate_control_algorithm = "pid";
 	priv->hw->max_signal = 100;
 
 	SET_IEEE80211_DEV(priv->hw, &intf->dev);