staging: r8188eu: remove rtl8188e_set_hal_ops()

After the removal of some pointers from struct hal_ops the function
rtl8188e_set_hal_ops() is empty now. Remove it.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210910205033.3778-8-straube.linux@gmail.com


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