staging: wilc1000: remove coreconfigurator.c file

After use of framework API's most of the redundant functions are removed
in coreconfigurator.c file. Now moved left over function to
host_interface file and deleted the coreconfigurator.c file.

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