drivers: staging: rtl8723bs: Remove unused clr_fwstate() function

The clr_fwstate() function is not used anywhere, remove it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230221145326.7808-3-hdegoede@redhat.com


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