staging: rtl8723bs: remove if-else blocks left empty by ODM_RT_TRACE deletion

remove if-else blocks left empty by ODM_RT_TRACE deletion.
remove unused variables to suppress compiler warnings.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/0e1196ebf56787f62dcbfbcba1fcbc2ed37a65ce.1619794331.git.fabioaiuto83@gmail.com


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