Call rtw_IOL_append_WRF_cmd directly, instead of using wrapper macro.

Delete wrapper macro, which is not needed.
Signed-off-by: Daniel Watson <ozzloy@challenge-bot.com>
Link: https://lore.kernel.org/r/4f26e0dd99e32738d7019ebcf680e7c73ed8ac8a.1655312169.git.ozzloy@challenge-bot.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>