staging: rtl8723bs: delete rtw_odm.c and rtw_odm.h

Remove rtw_odm.c and rtw_odm.h because the content of these files
is not used.

Signed-off-by: Nam Cao <namcaov@gmail.com>
Link: https://lore.kernel.org/r/6870109ce0c51b4ab91ec370d8b2285dc635e5fe.1662111798.git.namcaov@gmail.com


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