staging: ks7010: Remove unnecessary casts in 'struct ks_wlan_handler_def'.

The casts used when initializing members of this data structure mirror
the types the variables already have.  Remove the casts.

Signed-off-by: Quytelda Kahja <quytelda@tamalin.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>