staging: wilc1000: wilc_wfi_cfgoperations.c: removes unnecessary log messages

This patch removes unnecessary log messages and relate variables.
Signed-off-by: Chris Park <chris.park@atmel.com>
Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>