staging: wilc1000: delete define ACTION and PROBE_REQ

The define ACTION and PROBE_REQ are duplicate. They are aleady defined in
host_interface.h. Just delete it.

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>