staging: brcm80211: removed unused timeout fields in wlc_protection

The structure definition wlc_protection contained a numbers of timeout
fields that were not used in the driver. These have been removed.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>