[NET]: Make ipip/ip6_tunnel independant of XFRM

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/Kconfig

@@ -91,7 +91,6 @@ config INET6_TUNNEL
 config IPV6_TUNNEL
 	tristate "IPv6: IPv6-in-IPv6 tunnel"
 	depends on IPV6
-	select INET6_TUNNEL
 	---help---
 	  Support for IPv6-in-IPv6 tunnels described in RFC 2473.