staging: rtl8723bs: remove unused function ODM_InbandNoise_Monitor

because this function is not used. Also remove function
odm_InbandNoise_Monitor_NSeries because it is a static function
which is only called from ODM_InbandNoise_Monitor.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Nam Cao <namcaov@gmail.com>
Link: https://lore.kernel.org/r/46d73e331bae2192a328f6691763f39ea6c18b08.1661020250.git.namcaov@gmail.com


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