b43: don't pre-set radio_on variable to true

Setting it to true during init doesn't seem to be any workaround while
it can cause problems (not enabling radio due to belief it's enabled).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/main.c

@@ -5178,7 +5178,6 @@ static int b43_wireless_core_attach(struct b43_wldev *dev)
 	}
 
 	dev->phy.gmode = have_2ghz_phy;
-	dev->phy.radio_on = true;
 	b43_wireless_core_reset(dev, dev->phy.gmode);
 
 	err = b43_phy_versioning(dev);