bgpd: Remove useless initialization

It's initialized below

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/bgpd/bgp_route.c b/bgpd/bgp_route.c
index c2045a8..65a3ac1 100644
--- a/bgpd/bgp_route.c
+++ b/bgpd/bgp_route.c
@@ -2455,7 +2455,7 @@
 {
   struct bgp *bgp;
   struct attr attr;
-  struct aspath *aspath = { 0 };
+  struct aspath *aspath;
   struct prefix p;
   struct bgp_info binfo;
   struct peer *from;