staging: ks7010: remove KSC_OPNOTSUPP related code

This commit reviews KSC_OPNOTSUPP related code. The
preprocessor KSC_OPNOTSUPP is defined by default so
related wext functions are not being used. Just clean
code removing all of this stuff.

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