[LLC]: Kill static inline llc_addrany

After the patch:
$ git-grep llc_addrany | wc -l
0

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>