staging: rtl8723bs: remove unused argument 'msg'

After the removal of the DBG_871X macros, the 'msg' argument
for rtw_sctx_wait() is no longer used.

Signed-off-by: Bryan Brattlof <hello@bryanbrattlof.com>
Link: https://lore.kernel.org/r/20210513160848.1057564-1-hello@bryanbrattlof.com


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