staging: ks7010: delete not used definitions in ks7010_sdio source

This commit removes two definitions inside ks7010_sdio source file
because they are not being used at all.

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