Revert "rsi: fix potential null dereference in rsi_probe()"

This reverts commit f170d44bc4ec2feae5f6206980e7ae7fbf0432a0.

USB core will never call a USB-driver probe function with a NULL
device-id pointer.

Reverting before removing the existing checks in order to document this
and prevent the offending commit from being "autoselected" for stable.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c
index 23a1d00..760eaff 100644
--- a/drivers/net/wireless/rsi/rsi_91x_usb.c
+++ b/drivers/net/wireless/rsi/rsi_91x_usb.c
@@ -793,7 +793,7 @@
 		adapter->device_model = RSI_DEV_9116;
 	} else {
 		rsi_dbg(ERR_ZONE, "%s: Unsupported RSI device id 0x%x\n",
-			__func__, id ? id->idProduct : 0x0);
+			__func__, id->idProduct);
 		goto err1;
 	}