staging: r8188eu: remove unused function parameters

rtw_usb_if1_init and chip_by_usb_id do not need a
struct usb_device_id parameter.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210811201450.31366-2-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>