rt2800usb: remove PWR_PIN_CFG=0x3 during init

This seems to be only needed as workaround for hardware problem on
PCI devices.

Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -226,8 +226,6 @@ static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 	rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
 	rt2x00usb_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000);
 
-	rt2x00usb_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
-
 	reg = 0;
 	rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_CSR, 1);
 	rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_BBP, 1);