staging: rtl8723bs: remove unused code blocks completed

Remove related item in TODO list

-------------------------------------------------------

searched for other unused code blocks:

grep -r '^\(#ifdef \|#if defined(\|#ifndef \)CONFIG_' \
drivers/staging/rtl8723bs/

drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:#if defined(CONFIG_PM)
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:#if defined(CONFIG_PM)
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:#if defined(CONFIG_WEXT_PRIV)
drivers/staging/rtl8723bs/include/drv_conf.h:#ifndef CONFIG_RTW_HIQ_FILTER
drivers/staging/rtl8723bs/include/autoconf.h:#ifndef CONFIG_WIRELESS_EXT

all blocks left are checked by existing defines.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20210317105144.3732-1-fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/TODO

@@ -1,5 +1,4 @@
 TODO:
-- find and remove code blocks guarded by never set CONFIG_FOO defines
 - find and remove remaining code valid only for 5 GHz. Most of the obvious
   ones have been removed, but things like channel > 14 still exist.
 - find and remove any code for other chips that is left over