staging: rtl8723bs: remove unused code blocks conditioned by never set CONFIG_R871X_TEST

remove conditional code blocks checked by unused
CONFIG_R871X_TEST

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/108837d49bfc158ba9ffa21a06c31a9a0e7fba97.1615907632.git.fabioaiuto83@gmail.com


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