staging: wilc1000: coreconfigurator.c: remove unused functions

This patch removes following unused funtions which will not be used anymore.

ascii_hex_to_dec
get_hex_char
extract_mac_addr
create_mac_addr
conv_ip_to_int
conv_int_to_ip
get_wid_type
get_type
CreateConfigPacket
ConfigWaitResponse
ConfigProvideResponse
ConfigPktReceived
ParseWriteResponse
CreatePacketHeader
ParseResponse
ProcessBinWid
ProcessAdrWid
ProcessStrWid
ProcessIPwid
ProcessIntWid
ProcessShortWid
ProcessCharWid

As a result, four global variable causes defined but not used compile warnings.
So just remove unused varialbs g_seqno, g_wid_num, Res_Len and g_oper_mode.

Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Tony Cho <tony.cho@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>