staging: wilc1000: remove unused code in coreconfigurator

After refactoring of wilc_parse_network_info(), some of the functions and
macro are not required, so removed the unused code.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>