staging: keucr: Replaced c99 comments

Fixed a coding style issue. Replaced all
c99 comments by c89 ones and deleted
commented out code.

Signed-off-by: Kurt Kanzenbach <shifty91@gmail.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>