staging: rtl8723bs: remove unused code blocks conditioned by never set CONFIG_PNO_SUPPORT

Remove conditional code blocks checked by unused CONFIG_PNO_SUPPORT

Cleaning required in TODO file:

find and remove code blocks guarded by never set CONFIG_FOO defines

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/a8ba6c7996ba3f08054c433860be2de66b25d942.1615744948.git.fabioaiuto83@gmail.com


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