staging: wilc1000: remove over-commenting

There are over-commenting in wilc_msgqueue.h file. This comment is not
explain exactly what codes do and make checkpatch warning about "line
over 80 charcters". If necessary, comment will be added later with
preferred coding style.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>