staging: ks7010: remove nonsense comment

This commit removes a comment which has nonsense because
it is obvious what the code does just reading SET_NETDEV_DEV
declaration. This also fixes a checkpatch warning because a
line longer than 80 characters.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>