rt2x00: remove duplicate USB device ID

The device 0x043e,0x7a32 is already on the list under
CONFIG_RT2800USB_RT55XX. Since it is the sole Arcadyan entry in RT55xx,
assume the proper chip is RT55xx, not RT53xx, although this was not
confirmed by testing or 3rd party sources.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/net/wireless/ralink/rt2x00/rt2800usb.c

···
 #ifdef CONFIG_RT2800USB_RT53XX
 	/* Arcadyan */
 	{ USB_DEVICE(0x043e, 0x7a12) },
-	{ USB_DEVICE(0x043e, 0x7a32) },
 	/* ASUS */
 	{ USB_DEVICE(0x0b05, 0x17e8) },
 	/* Azurewave */