ipv6: remove prune parameter for fib6_clean_all

since the prune parameter for fib6_clean_all always is 0, remove it.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc include/net/ip6_fib.h
Simple merge

diff --cc net/ipv6/ip6_fib.c
Simple merge

diff --cc net/ipv6/route.c
Simple merge