rt2x00: Enable powersaving by default again on rt2500usb.

Now that the powersave issues on rt2500usb have been tackled, powersave
can be enabled by default again.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1646,11 +1646,6 @@ static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	char *tx_power;
 	unsigned int i;
 
-	/*
-	 * Disable powersaving as default.
-	 */
-	rt2x00dev->hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
-
 	/*
 	 * Initialize all hw fields.
 	 */