[RTNETLINK]: Remove remains of wireless extensions over rtnetlink

Remove some unused variables and function arguments related to the
recently removed wireless extensions over rtnetlink.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed