staging: rtl8723bs: Remove unused variable pwdev_priv

Remove unused variable pwdev_priv.

Fixes: bdee203c ("staging: rtl8723bs: Remove switch(type) as type is constant")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406250759.FnxzD3PK-lkp@intel.com/


Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240625194601.GA16828@matrix-ESPRIMO-P710


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