staging: wfx: drop unused argument in wfx_get_prio_queue()

staging: wfx: drop unused argument in wfx_get_prio_queue()

The argument "total" is not used anymore since commit d8da3543fdf7
("staging: wfx: simplify handling of IEEE80211_TX_CTL_SEND_AFTER_DTIM").

Fixes: d8da3543fdf7 ("staging: wfx: simplify handling of IEEE80211_TX_CTL_SEND_AFTER_DTIM")
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200401110405.80282-11-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>