staging: rtl8723bs: remove empty functions

remove functions left empty after ODM_RT_TRACE deletion.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/2a0606394fec2cbb32df6ec0bf4b5974416195f6.1619794331.git.fabioaiuto83@gmail.com


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