staging: r8188eu: remove c2h_id_filter_ccx from struct hal_ops

Remove c2h_id_filter_ccx function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-15-phil@philpotter.co.uk


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